"LMK" is an electro-R&B track which revolves around "a wobbly, three-note synth-bass" with Kelela singing about a "potential one-night-stand.

Briana Younger of Pitchfork noted that Jam City's "pristine soundscape, while more minimal than what Kelela usually sings over, complements her well with its blend of space-age clubbiness and sultry R&B.

"[2] "LMK" premiered on Zane Lowe's Beats 1 show on August 1, 2017, and subsequently released for digital download and streaming.

Directed by longtime Björk collaborator Andrew Thomas Huang, the video is "a surreal visual that sees Kelela moving through hazy, club-like environments with authority and a take-no-prisoners attitude."

"[13] A remix titled "LMK (What's Really Good)" featuring Princess Nokia, Junglepussy, Cupcakke and Ms.