This music left a sober lover in bits (6,6)

I believe the answer is:

ravels bolero

'this music' is the definition.
(Ravel's Bolero is a piece of music)

'left a sober lover in bits' is the wordplay.
'left' becomes 'l' (common abbreviation).
'in bits' is an anagram indicator (the bits of the anagram are rearranged).
'l'+'a'+'sober'+'lover'='lasoberlover'
'lasoberlover' with letters rearranged gives 'RAVELS BOLERO'.

I've seen this clue in The Irish Times.

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