Relix reached into their archives and pulled out a gem for their YouTube channel last week to honor Phil Lesh’s 80th birthday. Back in 2015, LOCKN’ featured two days of Phil and Friends with different guests each day.

On Friday, Phil was anchored by Chris Robinson and Neal Casal, while on Saturday Phil was flanked by two of the best guitarists in the game—Carlos Santana and Warren Haynes. The lineup was rounded out with Barry Sless, Rob Barraco & John Molo. Deep into the set, Santana and Haynes took over on the Grateful Dead classic “Fire on the Mountain.”

Thanks to Relix for the awesome footage of the once in a lifetime collaboration!