### Clue: Judge oddly neglected genre after piece on retired artist (7)
### Answer: ARBITER 
 ### Explanation: Definition: Judge
  ER{"genre" **minus**(neglected) "g","n","e"(its first, third and fifth letters,oddly)} ***placed after***(after) [BIT(a small piece) **added to**(on) **reversal of**(retired) RA(an artist who is a member of the $$R$$oyal $$A$$cademy of Arts, London)].