Performer in red can, incredibly (6)
I believe the answer is:
dancer
'performer' is the definition.
(I know that performer can be written as dancer)
'red can incredibly' is the wordplay.
'incredibly' indicates an anagram.
'red'+'can'='redcan'
'redcan' with letters rearranged gives 'DANCER'.
'in' acts as a link.
(Other definitions for dancer that I've seen before include "Eg, ballerina" , "See 25" , "Ballerina or chorus girl?" , "Ballet performer" , "One of Santa's reindeer" .)