musical style vs genre

musical style and genre both are nouns.

Word	Noun	Adjective	Verb	Adverb
musical style	Yes	No	No	No
genre	Yes	No	No	No

As nouns, genre is a hypernym of musical style; that is, genre is a word with a broader meaning than musical style:

Other hypernyms of musical style include music.

musical style (noun)	genre (noun)
an expressive style of music	a class of art (or artistic endeavor) having a characteristic form or technique
	a kind of literary or artistic work
	a style of expressing yourself in writing