I asked this question a while back... 'Would a MotifES/XS play back a MIDI file of Mega voices derived from a Yamaha arranger?'
I was informed that they are sufficiently different that they could not do this...
I wanted to use a Motif Rack with my G70, and use MIDI files of Mega guitar playing derived from T2 and S900 styles to add to the G70's SMF palette. Strictly for SMF's, Roland's cannot do Mega voice styles via MIDI (T2 translations, etc.), because it involves transposing only the PLAYED notes, not the control notes outside the normal range (Roland's transpose the entire track to follow chords).
Now, if anyone has some actual, real life, personal experience to contradict this, please speak out. In simple terms, has anyone taken a Yamaha arranger SMF of Mega style playing, played it into a Motif (rack or keyboard, it doesn't matter), and had the Part play correctly?
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An arranger is just a tool. What matters is what you build with it..!