First book for rock band (7)

I believe the answer is:

genesis

I believe this is a double definition.

'first book' is the first definition.
(I've seen this in another clue)

'for rock band' is the second definition.
(I've seen this before)

(Other definitions for genesis that I've seen before include "Birth, beginnings" , "Origin -- see sign (anag)" , "Origin; Bible book" , "name of group" , "Origin (of the Old Testament?)" .)

I've seen this clue in The Guardian.

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