Synthtopia

GarageBand Now A Free Download For All Mac Users

Apple has updated several of its Mac and iOS apps – including GarageBand, iMovie and iWork apps – making them available as free downloads for all Mac and iOS users.

The apps previously had been free with new Mac purchases. The changes makes them available for free for all Mac users running compatible versions of iOS/OS X. 

Here are software version requirements needed:

via MacRumors