bebop- Combo instrumentation (usually 2 horns and rhythm section)
Simple arrangements (melody, solos, melody)
Intricate melodies played in unison or octaves by the horn players
Higher levels of dissonance than swing
Extremely fast tempos or double-time playing during slow and medium tempos
Dazzling virtuoso solos
Little vibrato in sound of horn players
Players not concerned with beautiful sound
cool jazz- Cool: mostly white musicians, based on West Coast, mostly trained, played in harmony, original chords and melodies, improv is more stepwise, drummer used brush often, conservative/muted, began use of instruments indigenous to symphony (oboe, french horn...)
hard bop- -refined bebop; solos were more linear
-"A return to the hot", many artists wanted to get back to the roots in music.
-also called gospel jazz, funky jazz, and mainstream jazz. Hard Bop Innovators
-Horace Silver, piano
-Miles Davis, trumpet
bebop: more complex, small combos; cool: soft, easy to follow; hard: funky, groove based, more complex