Character, I note, interrupting a game (6)
I believe the answer is:
figaro
'character' is the definition.
(I have seen 'Operatic character ' mean 'figaro' so perhaps 'character' could also mean 'figaro')
'i note interrupting a game' is the wordplay.
'note' becomes 'g' (musical note).
'interrupting' is an insertion indicator.
'a game' becomes 'faro' (faro is a kind of game).
'i'+'g'='ig'
'ig' put within 'faro' is 'FIGARO'.
(Other definitions for figaro that I've seen before include "devoured in Paris" , "Barber, subject of Rossini & Mozart operas" , "Rossini's barber; Mozart's major-domo" , "Le -, French paper" , "Barber in Rossini opera" .)