[2] Pnau and Empire of the Sun are connected, with songwriter and producer Nick Littlemore being in both acts.

Pnau includes Peter Mayes and Sam Littlemore, while Empire of the Sun is completed with Luke Steele.

[3] The collaboration was teased via social media posts on 5 October 2023, with the statement "PNAU + Empire of The Sun - pre teaser".

"[5] Mary Varvaris from The Music said "Featuring Luke Steele's unmistakable vocal alongside Pnau's catchy beats, 'AEIOU' is a dance single we're not getting out of our heads anytime soon".

[6] The video directed by Kuba Matyka & Kamila Staszczyszyn (known as MELT AI) and premiered on October 12, 2023.