Hi,
I would spontanously say - Multipads. But I don't know how to convert a composer to multipad.
Or you lrecord with the styles you want a sequence, store it as MIDI with accomp parts, and after this you load this song to a song memory and the song you want to modify to another song memory.
In sequencer you can copy the tracks of one song to another song and copy the measures of a song. So you can add style drums to your song, not spontanously but it's possible.
One limitation: If the song contains lyrics, they are removed. When you want these lyrics, try to use a computer application for editing the song, maybe it will not touch the lyrics events.
------------------
Regards
RF
_________________________
Regards
RF