Band giving some of Sousa's hits (4)
I believe the answer is:
sash
'band' is the definition.
(a band of material)
'some of sousa's hits' is the wordplay.
'some of' indicates a hidden word.
'SASH' can be found hidden inside 'sousas hits'.
'giving' is the link.
(Other definitions for sash that I've seen before include "Item of clothing - frame for glass" , "Waistband - type of window" , "Baldrick" , "Brown bread for waist or shoulder" , "Popular band in Northern Ireland" .)