Complex sentence: Their song "Crazy Rainbow" is the theme song of popular Japanese anime cartoon "One Piece", and their song, "One Day, One Dream" was on the soundtrack of the Japanese anime "Inuyasha".
Split into simpler sentences: Their song "Crazy Rainbow" is the theme song of popular Japanese anime cartoon "One Piece". Also, their song "One Day, One Dream" was on the soundtrack of the Japanese anime "Inuyasha".