Well, it’s not so much the number of chords. Maybe there’s only three… but the problem is, even with the huge screen real estate each chord sequencer section gets, you can’t display the chords for a whole verse, or chorus, or bridge, whatever, just the first few. So it’s basically useless for anything other than displaying two bar loops’ chords.
That’s not what arranger players play. If you do music based on short loops, you use a workstation, an MPC, an NI Maschine, or a laptop. Not an arranger, for sure!
Yamaha made a bold leap forward with storable, multi-part chord sequences. It completely blurs the lines between arranger use and sequence use. But the way they have chosen the GUI for it has hobbled it somewhat.
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An arranger is just a tool. What matters is what you build with it..!