OSCream for Playbook is a free OSC controller app by Julien Nicault that comes with 4 different button and knob layouts. OSC or Open Sound Control is a standard for sending control information between computers and music equipment. A successor to MIDI, OSC offers way more fluidity of control in comparison to MIDI’s 128 notes.
As music programs move out of the studio and on to the stage, USB based MIDI and OSC controllers are a great way to make it feel like you’re playing an instrument as opposed to writing an essay. OSC can interface with almost every live pro audio app out there as well as several video and VJ apps too.