Trumpeter took a pew at church a little while (7)
I believe the answer is:
satchmo
'trumpeter' is the definition.
(I've seen this before)
'took a pew at church a little while' is the wordplay.
I cannot really understand how this works, but
'a' is found in the answer.
'church' could be 'ch' (common abbreviation) and 'ch' is found in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for satchmo that I've seen before include "Name used by jazz player Louis Armstrong" , "Louis Armstrong's byname" , "trumpeter" , "Louis Armstrong's nickname" , "Jazz musician" .)