### Clue: Googled this with FT after struggle to find work from 21 that 9 would produce (8,2,3,4)
### Answer: TWILIGHT OF THE GODS 
 ### Explanation: Definition: work from 21 that 9 would produce
  **Anagram of**(after struggle) GOOGLED THIS WITH FT. 
Answer: Work,opera by Wagner,answer to 21, performed at Bayreuth,answer to 9, best known as  Die Götterdämmerung.