However, the soundtrack of the beat movement was the modern jazz pioneered by saxophonist Charlie Parker and trumpeter Dizzy Gillespie, which the media dubbed bebop. Jack Kerouac and Allen Ginsberg spent much of their time in New York jazz clubs such as the Royal Roost, Minton's Playhouse, Birdland and the Open Door, shooting the breeze and digging the music. Charlie Parker, Dizzy Gillespie and Miles Davis rapidly became what Ginsberg dubbed "secret heroes" to this group of aesthetes. The Beat authors borrowed much from the jazz/hipster slang of the 1940s, peppering their works with words such as "square", "cats", "cool" and "dig".