The band resound (4)
I believe the answer is:
ring
This clue is a double definition.
'the band' is the first definition.
(a ring is a band of metal)
'resound' is the second definition.
(I know that resound can be written as ring)
(Other definitions for ring that I've seen before include "Buzz" , "13's story of a 17" , "Circle that's square for boxers" , "Circular object - sound" , "Sound a doorbell" .)