[4] Recorded at the Outlier Inn in Upstate New York's Catskill Mountains, the album features six instrumentalists in addition to the band's core duo of vocalist Ma Clément and keyboardist Zach Phillips.

[8][9][better source needed] Rong Weicknes received largely positive reviews from music critics upon its release.

[10] In a review for Pitchfork, Kieran Press-Reynolds called the album Fievel Is Glauque's "most giddily hyperkinetic, vividly colored, unabashedly maximalist record yet", describing its sound as a "jazzy version of middle-of-the-road '70s pop like the Carpenters, with a flurry of time signature and tempo shifts and extreme rhythmic flexibility".

[7] Writing for The Guardian, reviewer Ben Beaumont-Thomas described the album as a series of "teetering song-towers that never quite topple", summarizing that "brilliant melodies, poetic lyrics and quick-change time signatures elevate this quirky jazz pop release to a level all its own.

"[13] In a more mixed review for AllMusic, who assigned Rong Weicknes an Album Pick, Marcy Donelson wrote that "the songwriting is relatively variable, touching on familiar influences like French pop ('Haut Contre Bas'), jazzy vocal pop (the title track), Brazilian jazz ('I'm Scanning Things I Can't See'), and more", describing the album as "sweetly melodic and more structured at times (grooving second track 'As Above So Below') but is consistently uncanny and sometimes borders on harrowing", and concluding that the album's "triplicate" recording process ultimately makes it sound "muddled in many of its would-be fleeting spaces".