Singer of low songs (5)

I believe the answer is:

basso

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'singer of low songs' is the definition.
'basso' can be an answer for 'singer' (basso is a kind of singer). I am unsure of the 'of low songs' bit.

'singer of' is the wordplay.
'singer' becomes 'bass' (bass is a kind of singer).
'of' becomes 'o'.
'bass'+'o'='BASSO'

Can you help me to learn more?

(Other definitions for basso that I've seen before include "Singer" , "Lowest male singing voice (sometimes 'profundo')" , "low voice" , "one's deep in sound" .)

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

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