Photograph of the One O'Clock Lab Band performing at Festival International de Jazz Montreux in Switzerland in 1970. Band members are on stage split into three rows; those in the front two rows are sitting, and those in the back row are standing. A conductor is standing on the left side of the stage, facing the band. Audience members can be seen in the bottom portion of the photograph with their backs turned to the camera. A large event poster can be seen on the right side of the photograph.