Alesis V49

49 full-sized, square-front keys 8 velocity-sensitive backlit pads for beat production and clip launching 4 assignable knobs and 4 assignable buttons interface with your music software Octave Up and Down buttons let you access the full keyboard range Pitch and modulation wheels deliver expressive, creative control USB power and USB-MIDI connectivity for Mac and PC Production software included: Ableton Live Lite 9 and Xpand!2 by AIR Music Tech (downloads)