Pal composed note, just like friends (8)

I believe the answer is:

platonic

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'pal composed note just like friends' is the definition.
I can't judge whether this defines the answer.

'pal composed note' is the wordplay.
'composed' is an anagram indicator.
'note' becomes 'tonic' (type of note in a musical scale).
'pal' anagrammed gives 'pla'.
'pla'+'tonic'='PLATONIC'

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(Other definitions for platonic that I've seen before include "Relating to a particular Greek philosopher" , "sort of solid" , "Latin cop in kind of non-sexual romance" , "Purely spiritual (love)" , "Non-sexual (friendship)" .)

I've seen this clue in The Telegraph.

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