Something to belt out (4)
I believe the answer is:
tune
(Other definitions for tune that I've seen before include "Improve quality" , "Melody; adjust (engine)" , "temper" , "strain" , "Song" .)
I believe the answer is:
tune
(Other definitions for tune that I've seen before include "Improve quality" , "Melody; adjust (engine)" , "temper" , "strain" , "Song" .)