Elsewhere, Morricone’s original score is augmented by cues he wrote for John Boorman’s frightful Exorcist II: The Heretic and John Carpenter’s underrated The Thing (a tauter Kurt Russell thriller about snowbound, paranoid claustrophobia), while actor-musician David Hess’s haunting ballad Now You’re All Alone is photocopied in from the soundtrack of Wes Craven’s infamous The Last House on the Left .
The soundtrack was partially recycled from bits of his score for John Carpenter's The Thing and 1977's Exorcist II: The Heretic, but it still works perfectly against Tarantino's Old West backdrop.