Available digitally and as a limited edition CD and cassette, the duet marks the second time Puth and Jungkook have collaborated, the first being their performance of "We Don't Talk Anymore" at the Genie Music Awards in 2018.

A history of subsequent communication between the two via Twitter,[1] and a second cover with bandmate Jimin in mid-2017, culminated in a joint performance of the song at the Genie Music Awards in 2018.

[6] On June 17, Puth simultaneously confirmed the collaboration's occurrence and that the contributing artist was Jungkook of BTS, with the release of the first official teaser on TikTok.

In the clip, he video-calls the aforementioned, who is in a recording studio, and asks him to sing various lines from the song—the full snippet plays at the end—while standing to the left of the microphone, and then the right.

The second showed both singers "bob[bing] their heads while seated in an old sedan and beatbox[ing] along to the song's beat while using the click of the car door locks as an additional rhythm track".

[4][10] "Left and Right" is a "breezy, sentimental", "bubbly pop tune" with Puth "croon[ing] in his signature falsetto" and featured vocals from Jungkook of BTS.

[10][11] The song's "minimalistic pop production accentuates the singers' mellow, dulcet vocalizations", meshing "fresh percussion-guitar sounds" with a "bright, rhythmic melody".

[12] "Left and Right" debuted at number 49 on the Week 26 issue of the South Korean Gaon Digital Chart as the highest-charting new entry for the period dated June 19 to 25.

[24] The single charted for 17 consecutive weeks on the ranking,[25] and received Gold certification from the Recording Industry Association of America (RIAA) in November, for surpassing 500,000 sales in the country.

The montage featured both singers dressed in "a series of outfits as they sing back-to-back and Jungkook tries to listen to a conversation on the other side of a wall using a glass and hangs on to a car hood for dear life as it speeds through town".

[36] Directed by Drew Kirsch,[11] the "colourful" visual opens with Puth visiting the office of an elderly male therapist identified as "The Love Doctor" in an attempt to fix his heartache.

[11] Rolling Stone India's Divyansha Dongre wrote that the music video "captures the duo's mischievous, playful aura vividly.

"[39] Puth performed "Left and Right" live for the first time—he sang the song solo—during his appearance on the Today Show on July 8, 2022, as part of the Citi Concert Series.

[41] The following month, Puth appeared on the October 12 episode of The Tonight Show Starring Jimmy Fallon and performed the song together with "Loser".