1919- Jazz Pianists. Developed a harmonic language that adapted the practices of contemporary classical music. extensive use of counterpoint, the first to perform and record a type of music that came to be called "free jazz" in 1949, almost a decade before Ornette Coleman complex time signature changes, even rhythmic backgrounds rather than irregular cross-accents, carefully measured dissonance, and quite jarring polytonal effects. A pioneer in the use of the multitrack recorder. free improvisation, Jazz