A trumpet piece with spirit (3)
I believe the answer is:
rum
'spirit' is the definition.
(alcoholic spirit)
'a trumpet piece with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'RUM' is hidden in the letters of 'trumpet piece'.
(Other definitions for rum that I've seen before include "Odd spirit from sugar cane" , "Sugar-cane product" , "Droll" , "An odd kind of drink made from molasses" , "Curious, strange" .)