Forget Christian Grey. When we watched the 'Fifty Shades of Grey' trailer this morning, our minds were only on one thing: that sick version of Beyonce's 'Crazy in Love' that she recorded for the film. And fortunately for us, music producer Boots -- who scored the film and worked with Queen Bey on the reworking of the killer track -- spoke to Complex about the behind-the-scenes of the tune.

"I look at what we did for the trailer and this version of the song is, very much in my opinion, a score. It was something that I consciously scored," he explained. "Whenever it comes to the stuff that Bey and I do, I'll never speak for her, but I think that she killed it. She just absolutely killed it. The acapellas that she did gives me chills, so it's really dope."

"I think it was just falling in love can make you do crazy s---," he continued. "That was the spirit of the original song in the first place, we flipped it and it kind of became a whole thing."

No bones about it: It totally became a thing, and the Internet couldn't stop buzzing about the seductive, slowed-down version of the song. We can't get enough of it!

Forever Young! See Beyonce + More Celebs' Yearbook Photos