Jazz in the post-war years: In the early 1940s, bebop-style performers began to shift jazz from danceable popular music toward a more challenging "musician's music." The most influential bebop musicians included saxophonist Charlie Parker, pianists Bud Powell and Thelonious Monk, trumpeters Dizzy Gillespie and Clifford Brown, and drummer Max Roach. Divorcing itself from dance music, bebop established itself more as an art form, thus lessening its potential popular and commercial appeal. Composer Gunther Schuller wrote, "In 1943 I heard the great Earl Hines band which had Bird in it and all those other great musicians. They were playing all the flatted
Kora (instrument) string electro-acoustic instrument, was later developed by Robert Grawi especially for kora players who wanted a modern instrument. Its playing and tuning are the same as the traditional kora. The gravi-kora has been adopted by kora players such as Daniel Berkman, Jacques Burtin, and Foday Musa Suso, who featured it in recordings with jazz innovator Herbie Hancock, with his band "Mandingo", and on Suso's "New World Power" album. The kora music being part of the oral tradition, its music was not written until the 20th century. The ethnomusicologists were the only ones to note some traditional airs in the normal