 On "Unit Structures" (Blue Note, 1966) Taylor marked his transition to free jazz, as his compositions were composed almost without notated scores, devoid of conventional jazz meter, and harmonic progression.This direction influenced by drummer Andrew Cyrille, who provided rhythmic dynamism outside the conventions of bebop and swing Taylor also began exploring classical avant-garde, as in his use of prepared pianos developed by composer John Cage.Albert Ayler was one of the essential composers and performers during the beginning period of free jazz.