You guitar guys are insane!
Mike, I started out years ago playing the piano. I taught myself using a World Book Encyclopedia.

.
First music book I bought when I was 12 was Elton John's Greatest Hits. Turns out Elton is a damn fine piano player.

After much work I could just about play some of the easier songs. (Your Song, Border Song).
Rocket Man is in g minor, very tricky to do the right hand shifts and get the feel down. Elton's touch and feel is impeccable imho. Great left hand as well.
Long story short, I was never more than a half assed piano player. Guitar I can play most anything. I am by no means world class, but I have played professionally and can hang with most good players.
The one piece you did based on my chord progression was outstanding. You are truly a fine piano player. If you feel so inclined please post more. Guitar is much more limited than piano harmonically. As a consequence, I like the sound of a solo piano better than guitar.
Regards.
Oh...ps....the Mattaponi piece I posted above was partly built around an Am7-5 chords. Beautiful sound imho if deployed correctly.
The notes are A C Eb G. If you like I will post the full chord progression.