The "moods" are determined by tags* added to a track by users. Someone mistakingly must've tagged it as a cover once.
* Note that the ability to tag songs is currently not available to users of http://www.thesixtyone.com, but is still available to users of http://old.thesixtyone.com (an older layout of the site; you can use it with the same log in credentials as for the new).
This is a really interesting blend... The accent almost sounds like reggae vocals, yet then it goes more British-esque. Reminds me of Beirut. While not my cup of tea, it has potential and no evident shortcomings!
FRANKIE'S GUN!!