Like night turns to day, it seemed inevitable that Jacks Black and White would eventually collaborate on the music project of our dreams.
And now there's proof that they have - and it's going to be called "Jack Gray".
Black last night released an 18-minute video on his Jablinski Games YouTube channel, in which he and fellow Tenacious D member Kyle Gass travelled to White's Nashville studio to record a new song.
The White Stripes frontman even gives Black a tour of the Third Man headquarters, though the pair could barely keep a straight face throughout.
"It's kind of a museum, it's a recording studio, it's an art house, gallery... and now we're heading over to Jack White's house, to record a single," Black said.
"And me and Kage [Kyle Gass] have been working on a jam, but it's not quite done. Needs a little work.
"But I think that's where Jack White's gonna come in, and help us pull it over the finish line."
He added: "This is a legendary collab. Jack B, with Jack White."
Since there was no filming allowed in White's house, we know precisely nothing else about the project, except for Black's declaration that "it's a stone-cold jam".
Hopefully we won't have to wait too long to bless our ears, but in the meantime, watch the full, delightful video below.