What suggests self-confidence of acrobat group? (5)
I believe the answer is:
nonet
'group?' is the definition.
(group of nine musicians)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for nonet that I've seen before include "Piece for group" , "baseball team" , "Composition for nine performers" , "Tonne (anag.); music for a group" , "Tenon (anag.)" .)