GHOSTBUSTERS: AFTERLIFE composer Rob Simonsen talks about channeling Elmer Bernstein's original Ghostbusters music, going into top-secret studio vaults to read the script, and how he re-wired his musical brain in order to keep the music sounding true to the original. Then, he talks about how he knows when music fits the film, the rumored near-firing of his once boss, Mychael Danna, on Life of Pi, and why it's always crucial to dial in the perfect sound.