Carry on after trumpet's initial blow (5)
I believe the answer is:
thump
'blow' is the definition.
(thump is a kind of blow)
'carry on after trumpet's initial' is the wordplay.
'carry on' becomes 'hump' (I've seen this before. I am not sure about the 'on' bit.).
'after' means one lot of letters go next to another.
'initial' indicates taking the first letters.
The first letter of 'trumpets' is 't'.
'hump' after 't' is 'THUMP'.
Can you help me to learn more?
(Other definitions for thump that I've seen before include "Whack" , "Pound" , "Hit (with fist)" , "(Sound of) heavy blow" , "Hit - defeat heavily" .)