Entertainer trite as can be (7)
I believe the answer is:
artiste
'entertainer' is the definition.
(I know that artiste is a type of music interpreter)
'trite as can be' is the wordplay.
'can be' indicates an anagram.
'trite'+'as'='triteas'
'triteas' with letters rearranged gives 'ARTISTE'.
(Other definitions for artiste that I've seen before include "professional dancer?" , "Trouper" , "Attires like entertainer" , "Professional performer" , "Person playing" .)