I should probably point out that I did not actually create this song with "Back Up" in mind. The only reason why it was added to this instrumental I made was because I wanted vocals on it, so I simply searched the internet for a Snoop Dogg acapella. That's kind of why the acapella does not go perfectly on beat... Or! I'm just too lazy to warp vocals. This track however was created with Snoop Dogg - Countdown in mind. That's why there is such a similarity in melodies cause it was inspired by "Countdown".