Osiris Suite, Act 3

Osiris Suite, Act 3 is the thirty-eighth track of the Halo 5: Guardians Original Soundtrack, combining several levels' tracks. The first soundtrack portion is heard during the closing cutscene of Before the Storm, while the second portion plays during the latter half of the Mantis run in Swords of Sanghelios. The third portion is ambient music from the opening area of Swords of Sanghelios, followed by gameplay music from Battle of Sunaion. The final portion plays during the closing cutscene of Battle of Sunaion, as Sarah Palmer flies Fireteam Osiris to the departing Guardian.