“3, 2, 1” marks 24kGoldn’s first release of 2021 and serves as the third single to El Dorado. On this song, he sings about loyalty, asking his significant other to always be truthful with him and to not hide things.

The singer teased this song in an Instagram post on February 11, 2021. Four days later, he revealed the cover art. The following day, he revealed the release date with a snippet of the official music video.

On February 19, 2021, the accompanying visuals were released concurrently alongside this song. Fifteen minutes before its release, a live stream was held exclusively.