Today in 1990, Brent Mydland of thee Grateful Dead died. He became their keyboardist and backup vocalist after Keith died in a car accident.

This is the best I can do from my not so smart phone, but, I can't let it just pass by. Here's the wiki link with all the info I've been trying unsuccessfully to copy.

https://en.m.wikipedia.org/wiki/Brent_Mydland

Here's Brent giving Bobby a helping hand on Little Red Rooster.

https://m.youtube.com/watch?v=ha1HpZanXPo