A  jam session in jazz is a completely spontaneous moment in time that occurs only once. The music never happened before and will never happen again … not exactly the same way. After the crowd is gone and it’s only the musicians, maybe a few staff, that’s when the blowin’ really begins. It’s strictly from the heart. Here, Cozy Cole, Coleman Hawkins, Roy Eldridge, Johnny Guamieri, Barry Galbraith, Milt Hinton and Carol Stevens stretch out after hours.

Legendary New York DJ William B. Williams narrates the festivities. Thanks to Drummerworld.com for the video.