Bravo! Support low guitarist (7)

I believe the answer is:

bassist

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'low guitarist' is the definition.
The definition suggests a singular noun which matches the answer.

'bravo support' is the wordplay.
'bravo' becomes 'b' (phonetic alphabet: alpha, bravo, charlie etc.).
'support' becomes 'assist' (assisting is a kind of supporting).
'b'+'assist'='BASSIST'

Can you help me to learn more?

(Other definitions for bassist that I've seen before include "jazz player" , "Musician" .)

I've seen this clue in the Sydney Morning Herald.

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