KeyStudio 49-Note USB Keyboard Controller for Mac Music Software! Harness the power of your Mac music software with M-Audio's KeyStudio USB keyboard controller. KeyStudio makes it easy to command a library of virtual instruments audition loops and compose songs in GarageBand Logic and other Mac-compatible applications. The sleek controller features 49 synth-action keys plus pitch bend and modulation wheels sustain pedal input and more. Simply connect it to your Mac OS X computer with a single USB cable and start playing.