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Garageband

Add effects with GarageBand

http://support.apple.com/kb/VI204?viewlocale=en_US

GarageBand '11: Create a new project

It's easy to start a new project in GarageBand. In the project chooser, you'll find some templates for various instruments, podcasts and ringtones.
 

GarageBand '11 - Create an iPhone ringtone

http://support.apple.com/kb/VI205?viewlocale=en_US

You can turn any GarageBand song into an iPhone ringtone.
 

GarageBand '11 - Record your voice

http://support.apple.com/kb/VI200?viewlocale=en_US

GarageBand makes it easy to record your voice.

 

GarageBand '11: Take a Learn to Play guitar lesson

http://support.apple.com/kb/VI199?viewlocale=en_US

You can learn to play guitar with GarageBand.
 

GarageBand '11: Take a Learn to Play piano lesson

http://support.apple.com/kb/VI198?viewlocale=en_US

You can learn to play piano with GarageBand, using a music keyboard connected to your Mac.