Opener to main performance (7-6)
I believe the answer is:
curtain-raiser
(Other definitions for curtain-raiser that I've seen before include "Short play before the main performance" , "Preceding event" , "Preliminary event" , "drama" .)
I believe the answer is:
curtain-raiser
(Other definitions for curtain-raiser that I've seen before include "Short play before the main performance" , "Preceding event" , "Preliminary event" , "drama" .)