[11][12] Harle had hosted many live shows, DJ sets and concerts featuring the "Harlecore" title, dating as far back as September 2017.

[17] In late 2019, in a since deleted Tweet responding to a fan asking for new solo material, Harle stated he'd been "working on a lot of stuff" that would "be worth the wait".

[24] In a positive review, Heather Phares of AllMusic wrote that "Harlecore gives the blissful escapism of late-'90s and early-2000s rave culture a 2020s update while staying lovingly true to its roots," calling it "a briskly entertaining look back -- and forward -- at some of EDM's fizziest, gaudiest sounds.

"[2] For The Observer, critic Michael Cragg called it "big, dumb escapist fun with – as no one says any more – a massive donk on it.

described it as "full to bursting with '90s rave goodness — it's big, fun, and just a little bit dumb, all delivered with a massive meta wink from Harle himself.