The Korg M01 is a new Nintendo DS version of Korg's M1 Workstation that comes courtesy of AQ Interactive.
The M1 was hugely popular in the late '80s and early '90s, and the 8-part multitimbral, 12-note polyphonic DS version will feature all of its PCM data, giving you 300 sounds. There's an 8-track/16-step sequencer, a master effect (either reverb or delay), and various editing windows, while data can be exchanged wirelessly between DSs.
