Music from The Stones? (4)

I believe the answer is:

rock

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

I cannot understand how the rest of the clue works.

(Other definitions for rock that I've seen before include "Modern music with a heavy beat" , "Sway - very big stone" , "Swing" , "startle" , "Boulder; music" .)

I've seen this clue in The Sun.

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