I just wanted to show the results of alternating two pianos. I make these backgrounds for use in a live performance where I sing over them.

In this case, for each 4 bar phrase, I used Piano 889 in all 1st and 3rd measures and Piano 2778 in all 2nd and 4th measures--throughout the whole song.

Sure, it took an extra 5 minutes to go into each measure and turn on one piano and mute the other. But, it fixed a problem I was hearing--a kind of mechanical sound by just using Piano 889. It just didn't sound right.

This is much more interesting a background

https://soundcloud.com/rrtracks/right-or-wrong-f