OK Orchestra (stylized in all uppercase), often abbreviated as OKO, is the fourth studio album by American pop band AJR.

The band later decided on a more "melancholy, longing, and hopeful" sound, thinking of the negative mental repercussions that would come with writing a dark album.

[4] In an interview alongside Rivers Cuomo, AJR confirmed that the title of OK Orchestra was not based on either Radiohead's OK Computer or Weezer's OK Human,[5] the latter of which features the band on a remix of the track "All My Favorite Songs".

[6] On August 31, 2020 they released the album's second single, "Bummerland", a song about the band sarcastically expressing their feelings on the COVID-19 pandemic.

Two months afterwards on August 12, a music video for "Christmas in June" was released which featured footage filmed at the Wonderstruck Festival in Cleveland.

[15] A.D. Amorosi of Variety described the album as "harmonically vocalized, hyper-memoir-centric, atmospheric mélange of pop, hip-hop, and doo-wop with quirky rhythms and a salting of smart-assed They Might Be Giants for tart taste".

[2] In a review for AllMusic, Matt Collar wrote that "OK Orchestra isn't just full of hit-worthy pop hooks, it's stage-worthy, ambitious, and full of insights driven by AJR's personal experience", rating the album 4/5.

[16] Thomas Stremfel of Spectrum Culture received the album less positively, rating the album a 25/100 and stating that "hearing the terrible production and cringe-inducing songwriting of OK Orchestra without warning makes for an undeniably engaging listen...