Deadhead here. He will be missed. Only Bobby, Billy, and Mickey remain.
If you've been a fan, you know how much the crowd enjoyed chanting "Let Phil sing." He was a terrible singer, but beloved by the fans.
My wife and I formed a Grateful Dead cover band, but didn't do any Phil songs.
Still, since you're also a fan, how about some China/Rider? You can hear my wife rumbling at the bottom doing Phil's base part. Jabberwocky-style nonsense lyrics for China Cat Sunflower: