diff --git a/.gitignore b/.gitignore
index da296e7e11..ea0d8bbba7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,6 +28,9 @@ railties/guides/output
 *.swp
 *.swo
 actionpack/bin
+activerecord/bin
 vendor/gems/
 */vendor/gems/
 railties/tmp
+activerecord/vendor
+actionpack/vendor
diff --git a/actionmailer/lib/action_mailer/base.rb b/actionmailer/lib/action_mailer/base.rb
index c0c04af51c..df3bfb3620 100644
--- a/actionmailer/lib/action_mailer/base.rb
+++ b/actionmailer/lib/action_mailer/base.rb
@@ -481,7 +481,7 @@ def initialize(method_name=nil, *parameters) #:nodoc:
     # Initialize the mailer via the given +method_name+. The body will be
     # rendered and a new TMail::Mail object created.
     def create!(method_name, *parameters) #:nodoc:
-      ActiveSupport::Orchestra.instrument(:create_mail, :name => method_name) do
+      ActiveSupport::Notifications.instrument(:create_mail, :name => method_name) do
         initialize_defaults(method_name)
         __send__(method_name, *parameters)
 
@@ -550,7 +550,7 @@ def deliver!(mail = @mail)
         logger.debug "\n#{mail.encoded}"
       end
 
-      ActiveSupport::Orchestra.instrument(:deliver_mail, :mail => @mail) do
+      ActiveSupport::Notifications.instrument(:deliver_mail, :mail => @mail) do
         begin
           __send__("perform_delivery_#{delivery_method}", mail) if perform_deliveries
         rescue Exception => e # Net::SMTP errors or sendmail pipe errors
diff --git a/actionpack/lib/abstract_controller/logger.rb b/actionpack/lib/abstract_controller/logger.rb
index ebdeab3dfb..27ba5be45f 100644
--- a/actionpack/lib/abstract_controller/logger.rb
+++ b/actionpack/lib/abstract_controller/logger.rb
@@ -33,7 +33,7 @@ def method_missing(*args, &block)
     # Override process_action in the AbstractController::Base
     # to log details about the method.
     def process_action(action)
-      result = ActiveSupport::Orchestra.instrument(:process_action,
+      result = ActiveSupport::Notifications.instrument(:process_action,
                 :controller => self, :action => action) do
         super
       end
diff --git a/actionpack/lib/action_controller/caching/fragments.rb b/actionpack/lib/action_controller/caching/fragments.rb
index 00fb55f843..8c1167d526 100644
--- a/actionpack/lib/action_controller/caching/fragments.rb
+++ b/actionpack/lib/action_controller/caching/fragments.rb
@@ -53,7 +53,7 @@ def write_fragment(key, content, options = nil)
         return content unless cache_configured?
         key = fragment_cache_key(key)
 
-        ActiveSupport::Orchestra.instrument(:write_fragment, :key => key) do
+        ActiveSupport::Notifications.instrument(:write_fragment, :key => key) do
           cache_store.write(key, content, options)
         end
         content
@@ -64,7 +64,7 @@ def read_fragment(key, options = nil)
         return unless cache_configured?
         key = fragment_cache_key(key)
 
-        ActiveSupport::Orchestra.instrument(:read_fragment, :key => key) do
+        ActiveSupport::Notifications.instrument(:read_fragment, :key => key) do
           cache_store.read(key, options)
         end
       end
@@ -74,7 +74,7 @@ def fragment_exist?(key, options = nil)
         return unless cache_configured?
         key = fragment_cache_key(key)
 
-        ActiveSupport::Orchestra.instrument(:fragment_exist?, :key => key) do
+        ActiveSupport::Notifications.instrument(:fragment_exist?, :key => key) do
           cache_store.exist?(key, options)
         end
       end
@@ -101,7 +101,7 @@ def expire_fragment(key, options = nil)
         key = fragment_cache_key(key) unless key.is_a?(Regexp)
         message = nil
 
-        ActiveSupport::Orchestra.instrument(:expire_fragment, :key => key) do
+        ActiveSupport::Notifications.instrument(:expire_fragment, :key => key) do
           if key.is_a?(Regexp)
             message = "Expired fragments matching: #{key.source}"
             cache_store.delete_matched(key, options)
diff --git a/actionpack/lib/action_controller/caching/pages.rb b/actionpack/lib/action_controller/caching/pages.rb
index 72551d1fd6..d46f528c7e 100644
--- a/actionpack/lib/action_controller/caching/pages.rb
+++ b/actionpack/lib/action_controller/caching/pages.rb
@@ -64,7 +64,7 @@ def expire_page(path)
           return unless perform_caching
           path = page_cache_path(path)
 
-          ActiveSupport::Orchestra.instrument(:expire_page, :path => path) do
+          ActiveSupport::Notifications.instrument(:expire_page, :path => path) do
             File.delete(path) if File.exist?(path)
           end
         end
@@ -75,7 +75,7 @@ def cache_page(content, path)
           return unless perform_caching
           path = page_cache_path(path)
 
-          ActiveSupport::Orchestra.instrument(:cache_page, :path => path) do
+          ActiveSupport::Notifications.instrument(:cache_page, :path => path) do
             FileUtils.makedirs(File.dirname(path))
             File.open(path, "wb+") { |f| f.write(content) }
           end
diff --git a/actionpack/lib/action_controller/instrument.rb b/actionpack/lib/action_controller/notifications.rb
similarity index 52%
rename from actionpack/lib/action_controller/instrument.rb
rename to actionpack/lib/action_controller/notifications.rb
index 2c87ed7391..4ec88193d5 100644
--- a/actionpack/lib/action_controller/instrument.rb
+++ b/actionpack/lib/action_controller/notifications.rb
@@ -1,6 +1,6 @@
-require 'active_support/orchestra'
+require 'active_support/notifications'
 
-ActiveSupport::Orchestra.subscribe(/(read|write|cache|expire|exist)_(fragment|page)\??/) do |event|
+ActiveSupport::Notifications.subscribe(/(read|write|cache|expire|exist)_(fragment|page)\??/) do |event|
   if logger = ActionController::Base.logger
     human_name = event.name.to_s.humanize
     logger.info("#{human_name} (%.1fms)" % event.duration)
diff --git a/actionpack/lib/action_view/template/template.rb b/actionpack/lib/action_view/template/template.rb
index 84105bd05d..d1970ca3c7 100644
--- a/actionpack/lib/action_view/template/template.rb
+++ b/actionpack/lib/action_view/template/template.rb
@@ -27,7 +27,7 @@ def initialize(source, identifier, handler, details)
     end
 
     def render(view, locals, &block)
-      ActiveSupport::Orchestra.instrument(:render_template, :identifier => identifier) do
+      ActiveSupport::Notifications.instrument(:render_template, :identifier => identifier) do
         method_name = compile(locals, view)
         view.send(method_name, locals, &block)
       end
diff --git a/actionpack/test/controller/caching_test.rb b/actionpack/test/controller/caching_test.rb
index 3408233b66..df2dee8228 100644
--- a/actionpack/test/controller/caching_test.rb
+++ b/actionpack/test/controller/caching_test.rb
@@ -628,7 +628,7 @@ def test_fragment_for
 
   def test_fragment_for_logging
     fragment_computed = false
-    ActiveSupport::Orchestra.queue.expects(:publish).times(2)
+    ActiveSupport::Notifications.queue.expects(:publish).times(2)
 
     buffer = 'generated till now -> '
     @controller.fragment_for(buffer, 'expensive') { fragment_computed = true }
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index b411fe7526..8fae26b790 100755
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -200,7 +200,7 @@ def log_info(sql, name, ms)
 
       protected
         def log(sql, name, &block)
-          ActiveSupport::Orchestra.instrument(:sql, :sql => sql, :name => name, &block)
+          ActiveSupport::Notifications.instrument(:sql, :sql => sql, :name => name, &block)
         rescue Exception => e
           # Log message and raise exception.
           # Set last_verification to 0, so that connection gets verified
diff --git a/activerecord/lib/active_record/instrument.rb b/activerecord/lib/active_record/notifications.rb
similarity index 52%
rename from activerecord/lib/active_record/instrument.rb
rename to activerecord/lib/active_record/notifications.rb
index 06d3e40080..a5ce7ac524 100644
--- a/activerecord/lib/active_record/instrument.rb
+++ b/activerecord/lib/active_record/notifications.rb
@@ -1,5 +1,5 @@
-require 'active_support/orchestra'
+require 'active_support/notifications'
 
-ActiveSupport::Orchestra.subscribe("sql") do |event|
+ActiveSupport::Notifications.subscribe("sql") do |event|
   ActiveRecord::Base.connection.log_info(event.payload[:sql], event.payload[:name], event.duration)
 end
diff --git a/activesupport/lib/active_support/autoload.rb b/activesupport/lib/active_support/autoload.rb
index fa657ac99a..63f7338a68 100644
--- a/activesupport/lib/active_support/autoload.rb
+++ b/activesupport/lib/active_support/autoload.rb
@@ -18,9 +18,9 @@ module ActiveSupport
   autoload :MessageVerifier, 'active_support/message_verifier'
   autoload :Multibyte, 'active_support/multibyte'
   autoload :OptionMerger, 'active_support/option_merger'
-  autoload :Orchestra, 'active_support/orchestra'
   autoload :OrderedHash, 'active_support/ordered_hash'
   autoload :OrderedOptions, 'active_support/ordered_options'
+  autoload :Notifications, 'active_support/notifications'
   autoload :Rescuable, 'active_support/rescuable'
   autoload :SecureRandom, 'active_support/secure_random'
   autoload :StringInquirer, 'active_support/string_inquirer'
diff --git a/activesupport/lib/active_support/cache.rb b/activesupport/lib/active_support/cache.rb
index a2717499e7..818983fdd6 100644
--- a/activesupport/lib/active_support/cache.rb
+++ b/activesupport/lib/active_support/cache.rb
@@ -256,7 +256,7 @@ def instrument(operation, key, options, &block)
           if self.class.instrument
             payload = { :key => key }
             payload.merge!(options) if options.is_a?(Hash)
-            ActiveSupport::Orchestra.instrument(:"cache_#{operation}", payload, &block)
+            ActiveSupport::Notifications.instrument(:"cache_#{operation}", payload, &block)
           else
             yield
           end
diff --git a/activesupport/lib/active_support/orchestra.rb b/activesupport/lib/active_support/notifications.rb
similarity index 80%
rename from activesupport/lib/active_support/orchestra.rb
rename to activesupport/lib/active_support/notifications.rb
index 5f57127401..7e9ffca13f 100644
--- a/activesupport/lib/active_support/orchestra.rb
+++ b/activesupport/lib/active_support/notifications.rb
@@ -3,10 +3,10 @@
 require 'active_support/core_ext/module/attribute_accessors'
 
 module ActiveSupport
-  # Orchestra provides an instrumentation API for Ruby. To instrument an action
-  # in Ruby you just need to do:
+  # Notifications provides an instrumentation API for Ruby. To instrument an
+  # action in Ruby you just need to do:
   #
-  #   ActiveSupport::Orchestra.instrument(:render, :extra => :information) do
+  #   ActiveSupport::Notifications.instrument(:render, :extra => :information) do
   #     render :text => "Foo"
   #   end
   #
@@ -15,39 +15,39 @@ module ActiveSupport
   #
   #   @events = []
   #
-  #   ActiveSupport::Orchestra.subscribe do |event|
+  #   ActiveSupport::Notifications.subscribe do |event|
   #     @events << event
   #   end
   #
-  #   ActiveSupport::Orchestra.instrument(:render, :extra => :information) do
+  #   ActiveSupport::Notifications.instrument(:render, :extra => :information) do
   #     render :text => "Foo"
   #   end
   #
   #   event = @events.first
-  #   event.class     #=> ActiveSupport::Orchestra::Event
+  #   event.class     #=> ActiveSupport::Notifications::Event
   #   event.name      #=> :render
   #   event.duration  #=> 10 (in miliseconds)
   #   event.result    #=> "Foo"
   #   event.payload   #=> { :extra => :information }
   #
-  # When subscribing to Orchestra, you can pass a pattern, to only consume
+  # When subscribing to Notifications, you can pass a pattern, to only consume
   # events that match the pattern:
   #
-  #   ActiveSupport::Orchestra.subscribe(/render/) do |event|
+  #   ActiveSupport::Notifications.subscribe(/render/) do |event|
   #     @render_events << event
   #   end
   #
-  # Orchestra ships with a queue implementation that consumes and publish events
+  # Notifications ships with a queue implementation that consumes and publish events
   # to subscribers in a thread. You can use any queue implementation you want.
   #
-  module Orchestra
+  module Notifications
     mattr_accessor :queue
 
     class << self
       delegate :instrument, :to => :instrumenter
 
       def instrumenter
-        Thread.current[:orchestra_instrumeter] ||= Instrumenter.new(publisher)
+        Thread.current[:notifications_instrumeter] ||= Instrumenter.new(publisher)
       end
 
       def publisher
@@ -119,7 +119,7 @@ def parent_of?(event)
       end
     end
 
-    # This is a default queue implementation that ships with Orchestra. It
+    # This is a default queue implementation that ships with Notifications. It
     # consumes events in a thread and publish them to all registered subscribers.
     #
     class LittleFanout
@@ -167,5 +167,5 @@ def consume
     end
   end
 
-  Orchestra.queue = Orchestra::LittleFanout.new
+  Notifications.queue = Notifications::LittleFanout.new
 end
diff --git a/activesupport/test/orchestra_test.rb b/activesupport/test/notifications_test.rb
similarity index 65%
rename from activesupport/test/orchestra_test.rb
rename to activesupport/test/notifications_test.rb
index 1b2f98c7dd..561ee2b0ba 100644
--- a/activesupport/test/orchestra_test.rb
+++ b/activesupport/test/notifications_test.rb
@@ -1,13 +1,13 @@
 require 'abstract_unit'
 
 # Allow LittleFanout to be cleaned.
-class ActiveSupport::Orchestra::LittleFanout
+class ActiveSupport::Notifications::LittleFanout
   def clear
     @listeners.clear
   end
 end
 
-class OrchestraEventTest < Test::Unit::TestCase
+class NotificationsEventTest < Test::Unit::TestCase
   def test_events_are_initialized_with_name_and_payload
     event = event(:foo, :payload => :bar)
     assert_equal :foo, event.name
@@ -37,24 +37,24 @@ def test_event_is_parent_based_on_time_frame
   protected
 
     def event(*args)
-      ActiveSupport::Orchestra::Event.new(*args)
+      ActiveSupport::Notifications::Event.new(*args)
     end
 end
 
-class OrchestraMainTest < Test::Unit::TestCase
+class NotificationsMainTest < Test::Unit::TestCase
   def setup
     @events = []
     Thread.abort_on_exception = true
-    ActiveSupport::Orchestra.subscribe { |event| @events << event }
+    ActiveSupport::Notifications.subscribe { |event| @events << event }
   end
 
   def teardown
     Thread.abort_on_exception = false
-    ActiveSupport::Orchestra.queue.clear
+    ActiveSupport::Notifications.queue.clear
   end
 
-  def test_orchestra_returns_action_result
-    result = ActiveSupport::Orchestra.instrument(:awesome, :payload => "orchestra") do
+  def test_notifications_returns_action_result
+    result = ActiveSupport::Notifications.instrument(:awesome, :payload => "notifications") do
       1 + 1
     end
 
@@ -62,7 +62,7 @@ def test_orchestra_returns_action_result
   end
 
   def test_events_are_published_to_a_listener
-    ActiveSupport::Orchestra.instrument(:awesome, :payload => "orchestra") do
+    ActiveSupport::Notifications.instrument(:awesome, :payload => "notifications") do
       1 + 1
     end
 
@@ -70,12 +70,12 @@ def test_events_are_published_to_a_listener
 
     assert_equal 1, @events.size
     assert_equal :awesome, @events.last.name
-    assert_equal Hash[:payload => "orchestra"], @events.last.payload
+    assert_equal Hash[:payload => "notifications"], @events.last.payload
   end
 
   def test_nested_events_can_be_instrumented
-    ActiveSupport::Orchestra.instrument(:awesome, :payload => "orchestra") do
-      ActiveSupport::Orchestra.instrument(:wot, :payload => "child") do
+    ActiveSupport::Notifications.instrument(:awesome, :payload => "notifications") do
+      ActiveSupport::Notifications.instrument(:wot, :payload => "child") do
         1 + 1
       end
 
@@ -90,12 +90,12 @@ def test_nested_events_can_be_instrumented
 
     assert_equal 2, @events.size
     assert_equal :awesome, @events.last.name
-    assert_equal Hash[:payload => "orchestra"], @events.last.payload
+    assert_equal Hash[:payload => "notifications"], @events.last.payload
     assert_in_delta 100, @events.last.duration, 70
   end
 
   def test_event_is_pushed_even_if_block_fails
-    ActiveSupport::Orchestra.instrument(:awesome, :payload => "orchestra") do
+    ActiveSupport::Notifications.instrument(:awesome, :payload => "notifications") do
       raise "OMG"
     end rescue RuntimeError
 
@@ -103,22 +103,22 @@ def test_event_is_pushed_even_if_block_fails
 
     assert_equal 1, @events.size
     assert_equal :awesome, @events.last.name
-    assert_equal Hash[:payload => "orchestra"], @events.last.payload
+    assert_equal Hash[:payload => "notifications"], @events.last.payload
   end
 
   def test_event_is_pushed_even_without_block
-    ActiveSupport::Orchestra.instrument(:awesome, :payload => "orchestra")
+    ActiveSupport::Notifications.instrument(:awesome, :payload => "notifications")
     sleep(0.1)
 
     assert_equal 1, @events.size
     assert_equal :awesome, @events.last.name
-    assert_equal Hash[:payload => "orchestra"], @events.last.payload
+    assert_equal Hash[:payload => "notifications"], @events.last.payload
   end
 
   def test_subscriber_with_pattern
     @another = []
-    ActiveSupport::Orchestra.subscribe("cache"){ |event| @another << event }
-    ActiveSupport::Orchestra.instrument(:cache){ 1 }
+    ActiveSupport::Notifications.subscribe("cache"){ |event| @another << event }
+    ActiveSupport::Notifications.instrument(:cache){ 1 }
 
     sleep(0.1)
 
@@ -129,10 +129,10 @@ def test_subscriber_with_pattern
 
   def test_subscriber_with_pattern_as_regexp
     @another = []
-    ActiveSupport::Orchestra.subscribe(/cache/){ |event| @another << event }
+    ActiveSupport::Notifications.subscribe(/cache/){ |event| @another << event }
 
-    ActiveSupport::Orchestra.instrument(:something){ 0 }
-    ActiveSupport::Orchestra.instrument(:cache){ 1 }
+    ActiveSupport::Notifications.instrument(:something){ 0 }
+    ActiveSupport::Notifications.instrument(:cache){ 1 }
 
     sleep(0.1)
 
@@ -143,10 +143,10 @@ def test_subscriber_with_pattern_as_regexp
 
   def test_with_several_consumers_and_several_events
     @another = []
-    ActiveSupport::Orchestra.subscribe { |event| @another << event }
+    ActiveSupport::Notifications.subscribe { |event| @another << event }
 
     1.upto(100) do |i|
-      ActiveSupport::Orchestra.instrument(:value){ i }
+      ActiveSupport::Notifications.instrument(:value){ i }
     end
 
     sleep 0.1
diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb
index 8e0e28c362..fe2dc3769e 100644
--- a/railties/lib/rails/application.rb
+++ b/railties/lib/rails/application.rb
@@ -488,12 +488,12 @@ def new
       end
     end
 
-    # For each framework, search for instrument file with Orchestra hooks.
+    # For each framework, search for instrument file with Notifications hooks.
     #
-    initializer :load_orchestra_instrumentation do
+    initializer :load_notifications_hooks do
       config.frameworks.each do |framework|
         begin
-          require "#{framework}/instrument"
+          require "#{framework}/notifications"
         rescue LoadError => e
         end
       end
diff --git a/railties/lib/rails/configuration.rb b/railties/lib/rails/configuration.rb
index 3d9ae46786..3cb39245ff 100644
--- a/railties/lib/rails/configuration.rb
+++ b/railties/lib/rails/configuration.rb
@@ -290,12 +290,12 @@ def generators
       end
     end
 
-    # Allows Orchestra queue to be modified.
+    # Allows Notifications queue to be modified.
     #
-    #   config.orchestra.queue = MyNewQueue.new
+    #   config.notifications.queue = MyNewQueue.new
     #
-    def orchestra
-      ActiveSupport::Orchestra
+    def notifications
+      ActiveSupport::Notifications
     end
 
     class Generators #:nodoc:
diff --git a/railties/test/application/orchestra_test.rb b/railties/test/application/notifications_test.rb
similarity index 58%
rename from railties/test/application/orchestra_test.rb
rename to railties/test/application/notifications_test.rb
index fcf073bd6f..c861d10c35 100644
--- a/railties/test/application/orchestra_test.rb
+++ b/railties/test/application/notifications_test.rb
@@ -1,7 +1,7 @@
 require "isolation/abstract_unit"
 
 module ApplicationTests
-  class OrchestraTest < Test::Unit::TestCase
+  class NotificationsTest < Test::Unit::TestCase
     include ActiveSupport::Testing::Isolation
 
     class MyQueue
@@ -25,26 +25,26 @@ def setup
       build_app
       boot_rails
 
-      require "active_support/orchestra"
+      require "active_support/notifications"
       Rails::Initializer.run do |c|
-        c.orchestra.queue = MyQueue.new
-        c.orchestra.subscribe(/listening/) do
+        c.notifications.queue = MyQueue.new
+        c.notifications.subscribe(/listening/) do
           puts "Cool"
         end
       end
     end
 
     test "new queue is set" do
-      ActiveSupport::Orchestra.instrument(:foo)
-      assert_equal :foo, ActiveSupport::Orchestra.queue.events.first
+      ActiveSupport::Notifications.instrument(:foo)
+      assert_equal :foo, ActiveSupport::Notifications.queue.events.first
     end
 
     test "frameworks subscribers are loaded" do
-      assert_equal 1, ActiveSupport::Orchestra.queue.subscribers.count { |s| s == "sql" }
+      assert_equal 1, ActiveSupport::Notifications.queue.subscribers.count { |s| s == "sql" }
     end
 
     test "configuration subscribers are loaded" do
-      assert_equal 1, ActiveSupport::Orchestra.queue.subscribers.count { |s| s == /listening/ }
+      assert_equal 1, ActiveSupport::Notifications.queue.subscribers.count { |s| s == /listening/ }
     end
   end
 end