I generally get my Grateful Dead fix over the archive.org, but Wolfgang's Vault is great for other bands. I listened to a great 1974 Roxy Music show last night.
Sometime, pop in a late '70s show of your choice and pop open a 2006
Patricia Green Cellars "Four Winds" vineyard pinot. Yes, the vineyard is named after the line in Franklin's Tower. The pairing is exquisite.