Penned by Brandon and Brian Casey of Jagged Edge and produced by R&B hitmaker Bryan-Michael Cox (Usher, Mariah Carey, Mary J. Blige), this song finds the quartet promising a lady: "I'm gonna do all I can... to make your love come down."
Speaking of his and twin Brian's songwriting technique, Brandon Casey told Billboard magazine: "We write in a conversational way lyrically and try to sing in the way we would speak to a woman. That's probably the biggest secret ingredient: not being afraid to be naked emotionally. 'Yeah, I love the hell out of this woman' or 'Yeah, I hurt like hell.'"
The song samples the 1988 Al B. Sure track "Naturally Mine."
"Crank That (Soulja Boy)" was the most successful digital track of 2007 in the US with 2,909,000 downloads. On January 6, 2008 it became the first song ever to sell 3 million digital copies in the States.