Some took it even further than that. Sonny Rollins, one of the all-time great saxophonists, used to live in New York City. Not a lot of woods to practice in. So during one stretch between 1959 and 1961, he’d spend over ten hours a day practicing by himself on the Williamsburg Bridge. Thousands of cars and people would go past him, and he would block it all out, lost in perfecting his craft.

