MAGO was released in November 2020 as the lead single from Walpurgis Night, the third studio album by South Korean girl group GFRIEND, also known as Yeoja Chingu. Built around disco pop and retro synth sounds, it marked a more mature, glamorous image for the group. The song became their final title track before their contracts ended in 2021, giving it lasting nostalgia for fans. Online, short excerpts circulate in edits, dance covers and compilations celebrating late 2010s and early 2020s K-pop girl groups.