We make a call about going on without a band (7,4)
I believe the answer is:
wedding ring
'band' is the definition.
(wedding ring is a kind of band)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for wedding ring that I've seen before include "Left-hand, fourth-finger band" , "symbol of commitment to union" .)