### Clue: Play tune by artist originally labelled 'unremarkable' (7)
### Answer: NEUTRAL 
 ### Explanation: Definition: unremarkable
 **Anagram of**(Play) TUNE **plus**(by) RA(abbrev. for a member of the Royal Academy of Arts, an artist) + **1st letter of**(originally) "labelled".
Defn: Having no strongly marked characteristic or features, as in "a neutral colour".