 The developers refreshed Combat Evolved 's music and sound effects along with its visuals . While players can toggle the original music from Halo : Combat Evolved , the soundtrack was also rerecorded in partnership with Pyramind Studios , using the 75 @-@ piece Skywalker Symphony Orchestra and the Chanticleer vocal ensemble . Because there were no MIDI recordings of the original game 's music , Paul Lipson , Lennie Moore , Tom Salta , and Brian Trifon transcribed each piece of music . 
