When experimental music wizard Brodie Rush started writing the score for the Coterie Theatre's production of S.E. Hinton's coming-of-age classic last fall, he went back to the novel's setting: 1965. "I felt the music needed to be period rock, 1960s, so I went with a mix of surf and rockabilly, with slight Twin Peaks tendencies," Rush tells us. Armed with his Epiphone Firebird and Danelectro baritone guitars, effects pedals and a kick drum, he also played the music live, matching his original licks to the action. When we watched the play, Rush's music got to us as much as the script did. And for all of the story's deadly drama, the musician was having a blast. "I was free to experiment with any and all things musical," he says. "It was a very open situation for me musically." Is it too much to hope for a Rush-scored Rumblefish next year?