On June 30, 2017, the band released the compilation album
B-Sides and Rarities, which was done after realizing that they had many non-album songs that were either previously unreleased or were hard to find. They also stated that releasing the 14-track compilation album helped them "clean the creative closet, put the past to bed, and start anew." On May 11, 2018, Beach House released their seventh studio album
7 (2018), where they wanted to reassess their old methods, limiting their writing to arrangements that they were able to perform live and eventually deciding to follow what came naturally, adding that they let their creative spirits determine the album's feeling. After releasing
7, the band began recording their next album at Apple Orchard Studio in
Baltimore. It was then announced in February 2021 that they would contribute to arts company
Meow Wolf's interactive exhibition
Omega Mart, releasing a short film titled "Marin's Dreams" on April 22, 2021. In the same month, guitarist
Alex Scally revealed, in an interview with
Rolling Stone, that him and lead vocalist
Victoria Legrand were thinking of working on an eighth album, adding that they would "like to get there". On November 9, 2021, the band officially announced their eighth album as
Once Twice Melody, and stated that it would be released in four chapters throughout four months. In a September 2021 interview with
101.9 KINK FM, the band revealed that they were working on their album during the
COVID-19 pandemic, adding that it would be released in 2022. Regarding its recording process, while the duo were writing the album's songs and their melodies, they noticed a high usage in
string synthesizers and had experimented with strings on various songs to see if they "wanted" them. Live string arrangements were handled by
David Campbell; along with those, live drums were recorded in
Los Angeles, with the album's mixing being handled by four
mixing engineers, including
Alan Moulder. ==Composition==