### Clue: Price set by music company once before opening (8)
### Answer: PREMIERE 
 ### Explanation: Definition: opening
 PR(abbrev. for "price") **plus**(by) EMI(music company once, now defunct after being split up and sold off to various companies, that got its name from "Electric and Musical Industries") + ERE(before, in time).
Defn: …/first public showing of, say, a play or movie.