[3] Waterfall is B.I's second donation project, the first being Midnight Blue (Love Streaming), with all of the copyright fees, music and album sales, and content revenue generated after the album's release being donated to the emergency relief of "Basic for Girls", conducted by the International Relief Development (NGO) World Vision.
[4] On May 7, 2021, 131 Label announced the release schedule for the highly anticipated comeback of B.I as a solo artist, 6 years after debuting as the leader of iKon.
[5][6] The 12-track full-length record, Waterfall, is written and composed by B.I, with collaborations from other producers on compositions and arrangements.
[2] The album features K-pop vocalist Lee Hi (on "Daydream") and rapper Tablo of Epik High (on "Stay").
On May 17, 2021, at midnight KST, B.I's team released a detailed "plan poster" that outlined what fans can expect in the weeks leading up to his comeback.
[15] On September 17, 2021, it was reported that B.I has pledged to donate all the proceeds of the generated music and copyright fees, not only from his single album Midnight Blue (Love Streaming), but also from his first full-length album Waterfall to World Vision (a humanitarian aid, development, and advocacy organization).
B.I decided to conduct a "monthly donation project", and set up a detailed plan to continuously donate the entire amount of copyright fees, music and album sales, and content revenue generated after the release of the albums, up to 60 years after his death.
Though he does not claim to be a one-man island; in the songs, there is also an underlying sense of gratitude and appreciation for those who supported and stood by him.
[18] MTV News included the single in its "Bop Shop" selection for the same week, calling it a song "about beaches" that "is definitely not your classic Song of the Summer," as the track "balances melancholy, emotional lyrics with an upbeat melody bound to get stuck in your head.
"[19] The intro track "Waterfall", where B.I "explores the benefits of owning up and moving on," was also listed among the publication's favorite K-pop B-sides of 2021.