Rick was a prodigy. Hang On Sloopy at 18 years old, produced several Johnny and Edgar Winter records starting around age 23, and had a solo career plus side jaunts with folks like Cyndi Lauper, Steely Dan, and Weird Al. I lived and breathed his Derringer Live album for a while as a teenager learning to play guitar.
I finally got to see him live a few years ago. It was kind of a weird gig. A large food festival downtown, and the stage was across a small lake from the festival, so you couldn't see the band very well, but the sound was amazing. He played Frankenstein, Free Ride, and Hoochie Koo among others, and killed on all of them.
RIP.