Channel artist misrepresented (6)
I believe the answer is:
strait
'channel' is the definition.
(I know that strait is a type of channel)
'artist misrepresented' is the wordplay.
'misrepresented' is an anagram indicator.
'artist' is an anagram of 'STRAIT'.
(Other definitions for strait that I've seen before include "Narrow sea passage" , "Inlet" , "Narrow or difficult" , "Hardship - narrow passage of water" , "Narrow passage joining two large areas of water" .)