Outside of New York, a number of significant free jazz scenes appeared in the 1960s. They often gave birth to collectives. In Chicago, numerous artists were affiliated with the Association for the Advancement of Creative Musicians, founded in 1965. In St. Louis, the multidisciplinary Black Artists Group was active between 1968 and 1972. Pianist Horace Tapscott founded the Pan Afrikan Peoples Arkestra and Union of God's Musicians and Artists Ascension in Los Angeles. Although they did not organize as formally, a notable number of free jazz musicians were also active in Albert Ayler's hometown of Cleveland. They included Charles Tyler, Norman Howard, and the Black Unity Trio.