AceShowbiz - Rockers Dead & Company are reuniting with jazz musician Branford Marsalis at the Lockn' Festival later this year. Marsalis and the Grateful Dead performed together at Long Island's Nassau Coliseum in 1990, when bassist Phil Lesh invited him onstage to play "Bird Song". However, he stayed on the stage for the rest of the concert, jamming with the band on other songs like "Eyes of the World".

"I was an anthropologist that night, just checking this s**t out," Marsalis told Rolling Stone in 2014. "But it was a serious throwback to how I view music. There wasn't a set list. They barely spoke to the audience. And the audience didn't perceive that as disrespectful. The crowd was there to listen."

Their collaboration was released as "Wake Up to Find Out: Nassau Coliseum, Uniondale NY 3/29/90" and now John Mayer and former Dead members Bob Weir, Mickey Hart, and Bill Kreutzmann will come together with Marsalis for the August festival in Virginia.

"As I've always said, if we're not having fun, we're not doing our job," Weir says. "With Branford, at Lockn', I'll expect we'll be working overtime."

"I still remember fondly my time playing with the Dead in 1990 and this latest iteration of the Dead aesthetic is filled with great musicians," Marsalis adds. "I look forward to making music with them."