The John Mayer/Grateful Dead bromance rolls on today as the Dead & Company guitarist took out an ad in Billboard Magazine to thank the band for changing his life. 

“To the band that changed my life, and for their music that keeps on coloring it in: Congratulations on the 50th anniversary of your debut album,” the note read before Mayer signed off “Forever Grateful.” 

Mayer will have to wait a bit to join up again with his Dead & Company bandmates, as the group’s tour doesn’t kick off until May 27. However, he’ll be busy in the meantime as he readies for the release of his latest solo album The Search for Everything.