Powerfully rhythmic music in dance (3-3)
I believe the answer is:
hip-hop
'powerfully rhythmic music' is the definition.
'hip hop' can be an answer for 'music' (genre of music). I am not certain of the 'powerfully rhythmic' bit.
'in dance' is the wordplay.
'in' becomes 'hip' (both can mean fashionable).
'dance' becomes 'hop' (hop is a kind of dance).
'hip'+'hop'='HIP-HOP'
Can you help me to learn more?
(Other definitions for hip-hop that I've seen before include "Popular music style" , "Pop. music movement" , "Genre of 1980s and '90s African-American music" , "Electronic rap music" .)