Ninja Gaiden The Definitive Soundtrack is divided into two volumes: Vol. 1 and Vol. 2.
Vol. 1 contains the complete soundtracks for Ninja Gaiden on NES and Arcade. There are 59 tracks in total, with 31 for the NES edition and 28 for the Arcade. They were composed by Keiji Yamagishi, Mikio Saito and Ryuichi Nitta.
Vol. 2 contains the complete soundtracks for Ninja Gaiden II: The Dark Sword of Chaos and Ninja Gaiden III: The Ancient Sword of Doom. There are 29 tracks for Ninja Gaiden II and 30 tracks for Ninja Gaiden III. They were composed by Ryuichi Nitta, Mayuko Okamura, Rika Shigeno and Kaori Nakabai.