Inside Tedeschi Trucks Band's All-Star Joe Cocker Tribute Concert

When Derek Trucks and Susan Tedeschi were forming what became the multi-piece Tedeschi Trucks Band five years ago, they happened to watch Mad Dogs & Englishmen, the vintage rock doc about the riotous 1970 tour featuring Joe Cocker, Leon Russell and a cast-of-thousands crew of musicians and singers as they took their…