The ultra-iconic instrumental at the end of The Rolling Stones’ “Can’t You Hear Me Knockin'” was originally just a post-song jam session with Bobby Keys and Mick Taylor that was left in the final recording.

This is an embroidered Bluebird Records hat. Established in 1932, Bluebird Records was notable for recording Chicago Blues musicians. Notable blues musicians made up Bluebird's house band, which backed many records, including Big Bill Broonzy, Roosevelt Sykes, Washboard Sam, and Sonny Boy Williamson. Bluebird eventually folded after World War II, leaving a legacy of capturing extraordinary music from the 1930s and 1940s.