FRAMINGHAM — “What movie would you turn into a musical if you had the opportunity?” "Ratatouille." "Sinbad: Legend of the Seven Seas." "Toy Story." One suggestion — "Pretty Woman" — made 33-year-old Christopher Brindley pause. “It is a musical, I saw it — it’s terrible, it’s awful. It’s one of the worst musicals I’ve ever seen,” he said. “And they didn’t even have the song ‘Pretty Woman’ in it, which is the whole point, right?” On a recent morning, the head of the Fine and Performing Arts Department was in his Framingham High School office, launching his M...