I had no idea: Mark J. Perry (author of Carpe Diem, now hosted by AEI) used to be a musician.*
Click through to the page "My musical tribute to the ‘Master of Space and Time’ Leon Russell, R.I.P.", which both tells the story, and has a sample of his playing.
* He’s not the only economist who used to be a musician. I started winding down my playing in 1985. Once upon a time I was a pretty mean acoustic guitar player; I even jammed on stage with Steve Howe once. I miss it, and I don’t: my life is very full, and I do not feel like dropping what I do now in favor of guitar.