Answer:

bop

Answer	Crossword Clue
BOP	Style of jazz
BOP	Genre that became "hard" in the 1950s
BOP	Bird's music

BOP	Jazz form
BOP	Monk's milieu
BOP	Birdland sound
BOP	Charlie Parker's bag
BOP	Jazz style
BOP	Sound effect in V8 ads
BOP	Conk on the noggin
BOP	Gillespie genre

BOP	Jazzy '40s dance
BOP	Conk on the bean
BOP	Dizzy Gillespie's genre
BOP	"Yardbird Suite" genre
BOP	1940s jazz style
BOP	Dizzy Gillespie's style
BOP	Nerf-ball-to-the-noggin blow
BOP	Hit on the head

BOP	'40s jazz
BOP	Jive cousin
BOP	Dizzy's jazz
BOP	'40s jazz style
BOP	Monk music
BOP	Dizzy jazz?
BOP	Conk
BOP	Gillespie's genre

BOP	Dizzy music?
BOP	Jazz genre
BOP	Conk on the head
BOP	Hit on the noggin
BOP	Thelonious Monk's music
BOP	Jazz style for Charlie Parker
BOP	Jazz style for Gillespie
BOP	Fast-paced jazz style

BOP	Jazz of the '40s
BOP	Up-tempo jazz style
BOP	"Hard" jazz style
BOP	Charlie Parker's jazz style
BOP	Hit hard