Hits old man, muscular one for a change? (7,5)

I believe the answer is:

popular music

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'hits old man muscular one for a change?' is the definition.
I can't judge whether this defines the answer.

'old man muscular one for a change?' is the wordplay.
'old man' becomes 'pop' (both can mean one's father).
'one' becomes 'i' (Roman numeral).
'for a change?' indicates anagramming the letters (I've seen 'for a change' mean this).
'muscular'+'i'='musculari'
'musculari' with letters rearranged gives 'ularmusic'.
'pop'+'ularmusic'='POPULAR MUSIC'

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I've seen this clue in The Times.

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