Record a piece of music (4)

I believe the answer is:

note

'record' is the definition.
(note is a kind of record)

'a piece of music' is the wordplay.
'a piece' becomes 'n' (abbreviation for Knight in chess notation**).
'of' becomes 'o'.
'music' becomes 'te'.
'n'+'o'+'te'='NOTE'

(Other definitions for note that I've seen before include "Some money - some music" , "Memo; piano key" , "Short message; tone" , "Short record or letter" , "Eg, fiver; annotation" .)

I've seen this clue in The Globe and Mail and The Telegraph.

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