Physical appearance of Sham 69's leader knocking out tenor (8)

I believe the answer is:

presence

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'physical appearance' is the definition.
'presence' can be an answer for 'appearance' (I have seen 'Impressive appearance ' mean 'presence' so perhaps 'appearance' could also mean 'presence'). I'm not certain of the 'physical' bit.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for presence that I've seen before include "Impressive appearance" , "Being (significantly) there" , "Personal attendance" , "Aura; nearness" , "Demeanour" .)

I've seen this clue in The Independent.

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