Piece of cake and cheeses for the audience (6)
I believe the answer is:
breeze
'piece of cake' is the definition.
(I've seen this before)
'cheeses for the audience' is the wordplay.
'cheeses' becomes 'Bries' (Brie is an example).
'for the audience' shows a homophone (sound like) (how an audience might hear it).
'bries' sounds like 'BREEZE'.
'and' is the link.
(Other definitions for breeze that I've seen before include "Gentle wind or zephyr" , "picnic" , "A light pleasant wind" , "Doddle - light wind" , "Kind of block" .)