Soon after Charlie Christian's death, alto saxophonist Charlie Parker emerged as a new leader of the bebop movement. Parker's collaboration with Dizzy Gillespie, Thelonious Monk and Kenny Clarke, at sessions at Minton's, would build on the earlier experiments of Christian. Before 1942, Parker was known to have spent more time at Clark Monroe's Uptown House, another Harlem club where jam sessions extended into the early morning than he spent playing at Minton's. After leaving Jay McShann's band at the end of 1941, Parker joined Earl Hines's band in 1942 and was reunited with Dizzy Gillespie, who he had met sometime earlier. It was during this period of time starting in 1942 that Parker, nicknamed 'Bird', could be found sitting-in at Minton's on Monday nights as recalled by Miles Davis: