 Ayler's musical language focused on the possibilities of microtonal improvisation and extended saxophone technique, creating squawks and honks with his instrument to achieve multiphonic effects.Yet amidst Ayler's progressive techniques, he shows an attachment for simple, rounded melodies reminiscent of folk music, which he explores via his more avant-garde style.One of Ayler's key free jazz recordings is "Spiritual Unity", including his often recorded and most famous composition, "Ghosts", in which a simple spiritual-like melody is gradually shifted and distorted through Ayler's unique improvisatory interpretation.