Musician's time to follow sextet again (6)

I believe the answer is:

vibist

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'musician's' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?

'time to follow sextet again' is the wordplay.
'time' becomes 't' (abbreviation).
'to follow' says to put letters next to each other.
'sextet' becomes 'VI' (synonyms).
'again' becomes 'bis' (I've seen this before).
'vi'+'bis'='vibis'
't' put after 'vibis' is 'VIBIST'.

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I've seen this clue in The Guardian.

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