by Christopher Breen, Macworld.com When reviewing the 1.0 release of GarageBand for iPad, I wrote: “This amazing tool—complete with eight-track recording, easy-does-it interface, customizable and easily played virtual instruments, on-board loops, sampler, guitar amps and effects, drum machine, and tuner—may be the most inspiring musical iOS app I’ve ever used. and at a meager $5, …