Buzzer quietly making high-pitched sound (4)

I believe the answer is:

beep

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'high-pitched sound' is the definition.
'beep' can be an answer for 'sound' (beep is a kind of sound). I'm not certain of the 'high-pitched' bit.

'buzzer quietly' is the wordplay.
'buzzer' becomes 'bee' (insect which buzzes).
'quietly' becomes 'p' (p for piano and quiet).
'bee'+'p'='BEEP'

'making' acts as a link.

Can you help me to learn more?

(Other definitions for beep that I've seen before include "Toot" , "High-pitched noise" , "Alarming noise" , "Short high-pitched sound from an electronic device" , "Electronic noise" .)

I've seen this clue in The Times.

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