Go something like bang (3)
I believe the answer is:
pop
'bang' is the definition.
(thesaurus)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for pop that I've seen before include "Youthful music, dad(3)" , "Cartoon sailor (showing amazement?)" , "Music with mass appeal" , "Modern music for the masses" , "'American Dad'!" .)