Warren Haynes sat in with moe. on a cover of Led Zeppelin's "No Quarter" during the band's co-headlining show with Umphrey's McGee.

These modern bands have built their sound using the 1980s as a blueprint, echoing Bruce Springsteen, Siouxsie Sioux, and others.

Gov't Mule guitarist Warren Haynes took to social media to pay tribute to the groundbreaking musical legacy of the late Sly ...