Listen to Why so Serious? (The Crystal Method Remix) online. Why so Serious? (The Crystal Method Remix) is an English language song and is sung by Hans Zimmer and James Newton Howard. Why so Serious? (The Crystal Method Remix), from the album The Dark Knight (Collectors Edition) [Original Motion Picture Soundtrack], was released in the year 2008. The duration of the song is 5:28. Download English songs online from JioSaavn.