Spot a cello that's discordant (6)
I believe the answer is:
locale
'spot' is the definition.
(spot can mean a location)
'a cello that's discordant' is the wordplay.
'that's discordant' indicates an anagram.
'a'+'cello'='acello'
'acello' anagrammed gives 'LOCALE'.
(Other definitions for locale that I've seen before include "Place (of an event)" , "Scene of event or occurrence" , "where something happens" , "Area connected with event" , "Venue" .)