10 people are working on…

National Geographic's "Ten Best of Everything: Ten Best Opera Houses"

1. 
   Josh Petersen
2. 
   yoda_uk
3. 
   scottveg3
4. 
   BGGirlinUS
5. 
   saxophonesweetie7
6. 
   KLH91584
7. 
   Mayol
8. 
   Terpsikore
9. 
   santteri
10. 
    Stephanie_Madison