Kobukuro received moderately successful ratings for their first three indie albums - "" (July 1999), "Root of My Mind" (March 2001), and 'ANSWER' (December 2000). Kobukuro signed with Warner Music Japan in 2001, and made their debut with the hit single, "Yell" which reached #4 on the Oricon Charts. Their newest album is called "5296" (December 2007).