I can't believe Donny can't think of a use for this stuff! This is NH heaven!
I don't think Donny has quite got a grasp of what's going on with this feature. Think of all your UNISON brass patches... A trumpet, a couple of saxes, a trombone. Let's just take that as a starter.
So you play ONE note, they ALL play that one note. But when you play TWO notes, now you have twice as many players, because the trpt, 2 saxes and trombone are playing BOTH notes. Three notes, 12 brass players, 4 notes 16, etc., etc.. Not to mention, there isn't much range you can play that tutti sound in before either the trumpets get screechy, or the trombone becomes a tuba!
What the Ensemble feature does, when you are simply PLAYING it, is it SPLITS those players up... play one note, all four are on one note.Play two notes, and one of the trumpets and a sax play one of the notes, and the other sax and the t'bone plays the OTHER note. Play a four note chord, and only one instrument plays each sound. Just like the real thing!
The other thing you may have missed is, if you use the Melody Intelligence feature (or whatever Yamaha call it - you play a chord in the left hand, and single notes played in the RH section now play chords), it splits THOSE notes into single notes for each sound. So you get a FAR more accurate voicing for ensemble work.
For big band and jazz, this is amazing. But it also applies to ANY pop brass and wind voicing. Thing EWF, think Chicago, think Tower of Power. OK, not necessarily NH material, but you wanted examples of what you could do with it..!
I would be ecstatic if this feature were added to a Roland (some of the WS's can already do something similar, along with the VPP's, I think, but no arranger yet).
If this does not appear to be useful to you Donny, the failure is in your imagination, not the basic usefulness of the feature.
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An arranger is just a tool. What matters is what you build with it..!