AV ClubIt's a pop star vs. critics in the scattered cult horror Opus

Chicago Sun-Times'Opus' a hopeless pop music satire that mashes up movie genres into pure cacophony

Datebook | San Francisco Arts & Entertainment Guide‘Opus’ review: John Malkovich turn as crazy pop legend can’t save predictable horror film

The Detroit News'Opus' review: John Malkovich plays pop superstar in clumsy thriller

EmpireOpus

Linda MarricOpus Review - HeyUGuys

The IndependentA24’s cult thriller Opus is yet another superficial riff on Midsommar – review

The Irish TimesOpus: John Malkovich’s bopping saves this inventive but frustrating horror film

Little White LiesOpus review – off-key pop industry satire misses all its cues

James Mottram‘Opus’ review: bizarre but funky pop star thriller

Observer‘Opus’ Review: Pop-Star Cult of Personality Thriller Never Finds Its Groove

Paste MagazineOpus Can’t Crack Its Critique of Celebrity

SlashFilmOpus Review: This Cult Horror Comedy Is Too Familiar For Its Own Good [Sundance] - SlashFilm

The Daily BeastCasting John Malkovich as a Popstar Was a Rotten Idea

The Globe and MailReview: Music-world cult comedy Opus doesn’t exactly earn a standing ovation

Kevin Maher, Chief Film CriticOpus review — John Malkovich is miscast in a toothless celebrity satire

William Bibbiani‘Opus’ Review: John Malkovich Has a Fever, and the Only Prescription Is a Better Movie

Twin CitiesMovie review: ‘Opus’ a messy mashup of previous A24 films