"Check some of his stuff on YouTube, and it's obvious that he has a pretty good sense of humor."

Thanks to your link, Don, I checked out Harrell's cello playing--specifically some lessons he teaches on YouTube. Holy moley can he teach. I know from nothing about cello except I love its sound and what it can add to songs in almost any genre. I really understood after one ten minute lesson on YT what he does with one small aspect of cello playing, so much so that possibly I could explain it to a cellist. In the vernacular, WOW!