 As evidenced by his compositions on the 1956 record "Sounds of Joy", Sun Ra's early work employed a typical bop style.But he soon foreshadowed the free jazz movements with compositions like "A Call for All Demons" off of the 1955–57 record "Angels and Demons at Play", which combines atonal improvisation with Latin-inspired mambo percussion.His period of fully realized free jazz experimentation began in 1965, with the release of "The Heliocentric Worlds of Sun Ra" and "The Magic City."