Free is good most of the time... But, can't you get a piano to "cut through the mix" using other means?

In the mixing stage, there's a number of ways to get the piano up on top if that's where you want it.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.