I'm only playing the guitar. The piano is part of the style.
I can't remember exactly what I played, but it sounds a bit like an open E(add9) and a D... So, a 2 bar loop, hit play on the CS, then solo just on the guitar.
The fun part is deciding where you want to bend the notes, and where you want to hammer-on/off, where you want lines, where chords.
BTW, there's a parameter you can adjust with a slider that alters the speed of the strum when you play chords, so you can adjust this in realtime to account for either slow passages or quick stuff. There are also buttons that can move from plectrum picking to fingerpicking, and another that switches the sound to harmonics. A lot of expressive possibilities all in one patch!
You don't get the random fret squeaks like the SA2 Yamaha stuff does, but I never really got that under my command. I could never figure out how to ensure I hear it when I want it, and not when I don't. It would be nice to have on the Roland, but only if they figure out how to keep it under our control...
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An arranger is just a tool. What matters is what you build with it..!