The Roland MC-505 is a groovebox conceived in 1998 as a combination of a MIDI controller, a music sequencer, a drum machine, and a desktop synthesizer with many synthesis features: arpeggiator, oscillators, and voltage-controlled filter, control of attack, decay, sustain and release, different envelopes and 2 LFOs. It was released as the successor to the Roland MC-303 and is functionally related to the later-released Roland JX-305 Groovesynth, which added a 61-key full-sized keyboard but which lacked the MC-505's Megamix and D-Beam hardware and functionality. The Roland MC-505 is also the predecessor to the Roland D2, Roland MC-307, Roland MC-909 and the Roland MC-808.