Fall Out Boy is not messing around with this new record. Believe that. Unlikely candidate 2 Chainz was featured in the band's video for 'My Songs Know What You Did In The Dark (Light Em Up),' but more details on special guest stars on the band's album are coming to light.

They announced via Twitter that Courtney Love herself will appear on their upcoming album 'Save Rock and Roll,' which is set to be released on April 16. The band posted a short, yet appropriately titled, teaser clip called, "It's Courtney, b---h."

But wait, it gets better. Patrick Stump tweeted a picture of himself with Sir Elton John in the studio with the caption, "#saverockandroll #sireltonjohn."

At SXSW, Patrick Stump said that Elton John was the one who encouraged them to title their album 'Save Rock and Roll.' He explained, "He was like, 'You need to stand up to that title! Cause you’re gonna p— a lot of people off that you should p— off."

We were excited for this new music before, but now we're SUPER pumped! April 16, get here now!

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Watch the Fall Out Boy + Courtney Love Collaboration Teaser