Joe Chen
Ying Ye 3 + 1 Original Soundtrack (櫻野三加一 電視原聲帶) was released on March 8, 2007 by 5566, Joe Chen, Jason Hsu, and Ming Dao. It contains eleven songs, in which five songs are various instrumental versions of the five original songs. The opening theme song is "終極陷阱" or "Final Trap/Yes Sir" by 5566, while the ending theme song is by Ming Dao and Joe Chen entitled "再次相信" or "To Believe Again".