Excellent band getting exposure (6)
I believe the answer is:
airing
'getting exposure' is the definition.
(being exposed to the air)
'excellent band' is the wordplay.
'excellent' becomes 'ai' (resembles 'A1', old-fashioned term for excellent).
'band' becomes 'ring' (synonyms).
'ai'+'ring'='AIRING'
(Other definitions for airing that I've seen before include "Publicity" , "Showing" , "Ventilating, say a grievance" , "Expressing (an opinion) publicly" , "Ventilation" .)