Cerio,
Thanks for informing me about Spleeter.
Here is the piano stem from that program. This is what I suspected, the quality is just not there. To be sure, this is a tough technical nut to crack, and they have made great strides but (at least for Spleeter) they need to do more development work for piano stems to be useful to me. The bass stem is better, and could be useful. Bass is easier because of where it sits in the spectrum.

I did the same with Song Master Pro and got essentially the same results.
I wonder how Audacity or other programs do on this song.

Spleeter Piano Stem


https://soundcloud.com/user-646279677
BiaB 2025 Windows
For me there’s no better place in the band than to have one leg in the harmony world and the other in the percussive. Thank you Paul Tutmarc and Leo Fender.