Arturia KeyStep Slimkey keybed with velocity and aftertouch Arpeggiator mode features up, down, inclusive, exclusive, random, note order, double up, double down modes Sequencer mode features 8 polyphonic step-sequences with Rest, Tie, and Legato note entry Rate control and tap tempo slave the REC, PLAY, and STOP buttons for performance control over the sequencer and arpeggiator Sustain HOLD button or sustain pedal jack Chord play mode SHIFT button selection addresses KeyStep is a new breed of portable musical tool combining the functionalities of a keyboard controller with a polyphonic step sequencer to control both analog and digital devices