Singer in valley with clan member (4,8)
I believe the answer is:
glen campbell
'singer' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'valley with clan member' is the wordplay.
I cannot quite understand how this works, but
'valley' could be 'glen' (glen is a kind of valley) and 'glen' is found within the answer.
'clan' could be 'campbell' (I've seen this before) and 'campbell' is found within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Another definition for glen campbell that I've seen is " Rhinestone Cowboy singer".)