James Jason Poyser (b. January 30, 1967) is an American record producer, multi-instrumentalist, and songwriter from Philadelphia, Pennsylvania. He has been a member of the hip-hop band The Roots since 2009, and plays with The Roots in the house band for The Tonight Show Starring Jimmy Fallon and formerly, Late Night with Jimmy Fallon. Description above from the Wikipedia article James Poyser, licensed under CC-BY-SA, full list of contributors on Wikipedia.