### Clue: Singer given a flag endlessly backed by old artist (4,3)
### Answer: RITA ORA 
 ### Explanation: Definition: Singer
 **Reversal of**(… backed) [A + "tire"(to flag;to weaken) **minus its last letter**(endlessly) ] **plus**(by) O(abbrev. for "old") + RA(abbrev. for "Royal Academican", a member of the Royal Academy of Arts;an artist).