Miles Davis, through his adoption of modal music, participated in the gradual liberation that resulted in the free music of the jazz avant-garde – liberation from chord changes, from rhythm, from harmony, from melody, from structure. Yet, although he continued to explore broadly, he was public in his discomfort with free jazz. Despite this reluctance, the new quintet that he began to build in 1963 resulted in the freest music of his career and became legendary as his Second Great Quintet.