Can't we tell who this singer is from behind? (4)
I believe the answer is:
dion
'can't we tell who this singer' is the definition.
'dion' can be an answer for 'singer' (I've seen this before). I am not certain of the remainder of the definition.
'from behind?' is the wordplay.
I cannot quite understand how this works, but
'from' could be 'o' (I've seen this in other clues) and 'o' is found in the answer.
The remaining letters 'din' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
'is' acts as a link.
Can you help me to learn more?
(Another definition for dion that I've seen is " Singer".)