When we wrote this song, we had no idea that we will get so lucky to have Troye Sivan singing and bringing his unbridled creativity to the world of PNAU."

[1][2] The trippy psychedelic visual are, according to video producer Kuba Matka, inspired by the stargate sequence from 2001: A Space Odyssey.

[5] Tyler Jenke from Music Feeds called the song a "summery pop anthem" that "places Pnau[']s eclectic electronic instrumentation alongside Sivan's soaring vocals.

"[1] Greta Brereton from NME called it "a fitting blend of Sivan's easygoing pop and the energetic dance music Pnau are known for, with smatterings of upbeat synth, catchy production and soaring vocals".

[6] Politica Mente Corretto felt that "Troye's enveloping falsetto ties into the immediacy and elegance of Pnau's sound, making 'You Know What I Need' a perfect combination of radio pop and modern disco groove.