Songfacts®:

• Here, Regard teams up with Olly Alexander of Years & Years. The slick and sexy track finds Alexander crooning about a former lover who turned out to be a fake. The ex wants to give their relationship another go, but the singer isn't having it. Alexander tells the dude he did once believe him to be genuine but now realizes his love was just "a hallucination."
• Alexander originally wrote "Hallucination" with the New Zealand producer Joel Little (Lorde's "Royals," Taylor Swift's "You Need To Calm Down") in 2019. "I was inspired to write it when an ex-lover attempted to re-enter my life," said the singer.
• Alexander couldn't find the right home for the track, so he was thrilled when Regard expressed an interest in working on it. The Kosovo-Albanian producer came up with a trippy, dance floor-ready track that connects with the strident vocals.
• The song samples the Filatov & Karas remix of French pop-soul singer Imany's 2016 song "Don't Be So Shy." The track appeared on her sophomore album, The Wrong Kind of War.