Al Kooper is an American musician, songwriter, and record producer, born on February 5, 1944. He is best known for his work as a keyboardist and his role in the formation of the band Blood, Sweat & Tears. Kooper gained fame for his innovative use of the organ and his contributions to rock and blues music. In addition to his work with Blood, Sweat & Tears, Kooper played on notable albums, including Bob Dylan's "Highway 61 Revisited," where he famously played the organ on the track "Like a Rolling Stone." Throughout his career, he has collaborated with various artists and has been influential in the music industry.