5 Seconds Of Summer premiered brand new song 'Jet Black Heart' earlier today (August 27)on New Zealand radio, and, well, it's an emotional one.

Preparing for the release of their forthcoming new album Sounds Good Feels Good, the boys have made the track available to fans via iTunes if they pre-order the LP.

The song is a whole lot darker than 'She's Kinda Hot', proving that 5SOS can basically do anything and are some kind ofaliens from another planet.

These are just a few of the lyrics that the fans love (which is bascially the whole song), and how they've responded in incrediblycreative ways:

SGFG is set for release on October 23. We know, it's ages away.