Thanks

I managed to get a piano solo... but only 1-finger style.
I still can't figure out if it's possible to get the full song to sound like it's a single person playing it on a piano.
The full songs I get now have bass and melody played by, well, the other virtual band-members and not the piano-player (if my explanation makes sense

)
The solo sound very thin when it's 1-finger, and without the bass and melody being present.
And if I un-mute bass and melody, the full song is more complex than what a single person with 2 hands can physically play.
I guess I'm looking for a way to translate the full arrangement into one a single person can play on a piano, rather than one that is played by several people each on their respective instrument.