Also Pran, occasionally camouflaged high-pitched voice (7)
I believe the answer is:
soprano
'camouflaged high-pitched voice' is the definition.
'soprano' can be an answer for 'voice' (soprano is a kind of voice). I'm not sure about the 'camouflaged high-pitched' bit.
'also pran occasionally' is the wordplay.
'also' becomes 'so' (synonyms).
'occasionally' becomes 'o' (this could be a standard abbreviation which I don't know about).
'so'+'pran'+'o'='SOPRANO'
Can you help me to learn more?
(Other definitions for soprano that I've seen before include "Female singer" , "Norman, perhaps" , "Woman singing" , "Sutherland?" , "(Singer of) the highest vocal range" .)