### Clue: Legendary royal butt raised in support of performance by Callas, say? (7)
### Answer: ARIADNE 
 ### Explanation: Definition: Legendary royal
 **Reversal of**(… raised, in a down clue) END(butt/bottom end) **placed below**(in support of, in a down clue) ARIA(example/say, of a song performed by opera singer Maria Callas).
Defn: In Greek legend/mythology, a royal, specifically a Cretan princess.