For Kraftwerk, Yes and ZZ Top not top music! (4)

I believe the answer is:

jazz

I'm a little stuck... Click here to teach me more about this clue!

'music' is the definition.
(jazz is a kind of music)

'for kraftwerk yes and zz top not top' is the wordplay.
I cannot really see how this works, but
'zz' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for jazz that I've seen before include "Syncopated music style" , "Type of music" , "Music with improvisation" , "Music of Black American origin" , "Form of music" .)

I've seen this clue in The Independent.

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