Stop in a few bars (7)
I believe the answer is:
refrain
'stop' is the definition.
(I've seen this before)
'in a few bars' is the wordplay.
I cannot quite see how this works, but
'in' is found in the answer.
'a' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for refrain that I've seen before include "Chorus; desist" , "Hold back" , "tune" , "Words repeated after verses" , "Repeating line in a song, poem" .)