Originally recorded by Lopes and her TLC groupmate Tionne "T-Boz" Watkins in 1998 for the group's third studio album FanMail, the track was shelved until 2009, when it was remixed to feature new vocals from fellow member Rozonda "Chilli" Thomas and rapper Missy Elliott.

The song was originally produced by Dwight Reynolds and recorded in 1998 by Lopes and Watkins for possible inclusion in the 1999 multi-platinum FanMail.

In 2008, when Eye Legacy began production, "Let's Just Do It" was selected to be included on the album and be released as the lead single.

[2] "Let's Just Do It" received a positive review from Billboard magazine: "The energy that made the trio's upbeat singles international smashes is evident here, along with Lisa's essence—a reminder that TLC was among the most successful female R&B groups of all time.

Originally recorded in 1998, the Heavy Weights and Marcus DL's production builds a catchy and contemporary rhythmic structure.