 Initially with George Coleman or Sam Rivers on tenor sax, the final piece of the puzzle would arrive in late 1964 with saxophonist Wayne Shorter.The performance style of the Second Great Quintet was often referred to by Davis as "time, no changes", incorporating elements of free jazz without completely surrendering to the approach.This allowed the five musicians to simultaneously contribute to the group as equals at times, rather than to always follow the established pattern of having the group leader and then the backing musicians perform unrelated solos.