“I PLAY LIKE 200 NIGHTS A YEAR,” SAYS WORKAHOLIC AND JAZZ LEGEND JOHN Scofield. “If I want to go back to, say, Phoenix, I can’t show up with the same band I was there with two years earlier. They want another project.” That’s how Sco explains why he finds himself in so many disparate music environments, from his jazz trio to Phil Lesh & Friends to collaborations with Medeski, Martin & Wood to his current bag: gospel blues.