The cool instrumental beats used as pervasive background music for Samurai Champloo have been collected on four original soundtrack (OST) CDs released in Japan, and. Rurouni Kenshin: Meiji Swordsman Romantic Story, also known as Rurouni Kenshin and Samurai X, is a Japanese manga series written and illustrated by Nobuhiro Watsuki. The Last Samurai Hans Zimmer 2003 Extraordinary Soundtrack. The Last Samurai Hans Zimmer 2003 Extraordinary Soundtrack.