In a four piece with keys, bass, drums and vocals.
Loved the keys player when he auditioned for a band I used to be in. Main reason because he could really play, and take a solo at the drop of a hat. But the fact that his style dovetailed so nicely with mine was hugely influential in wanting to get him into the next band I formed.
It's not that his left hand never strays into my area, but he plays what the song requires and I have the bottom end taken care of so he doesn't have to worry.