A popular song (or even a nearly unknown one) has a cover version released. Rather than stick to the tone of the original, the band covering it decides to take it a different way. If the original was a happy song, it may be redone sarcastically or sadly. If the song was about the breakup of a relationship, it could be changed to being about the character's Sanity Slippage. Either way, the meaning [...] [tvtropes.org]