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MIDI Auto-Accompaniment Section is a software which offers all major features of a high quality MIDI keyboard. It comes with real-time chord recognition, style manager, song arranger, recording section, up to 16 fingered and 10 two-finger chord types, MIDI controls and about 30 demo styles. MAAS is an easy-to-use improvisation tool and a great aid to practise songs and melodies; a complete backing group for keyboarders, guitar players, bass players and soloists.