RMCA Realtime MIDI Chord Arranger Pro - Version 4.1 RMCA Pro is an auto-accompaniment software for Windows 95/98/ME/2000 which offers all major features of a high quality MIDI keyboard. It comes with chord recognition, based auto arranger, style creator, LeadSheet editor, recording section, up to 16 "fingered" and 10 "two-finger" chord types, MIDI-Import/Export, about 30 demo styles and much more. A unique feature of RMCA Pro is its ability to create an accompaniment style from virtually any MIDI input (MIDI file or live music).