Born in North West London, she released her first long-play, Good Nights Bad Stories, as LCYTN in 2018, after which she took a break from making music.
[3] She studied economics with Burmese at SOAS University of London;[6] in 2018, during her first year, she released her first long-play, Good Nights Bad Stories, as LCYTN,[2] a disemvoweled form of her own name.
[5] She then promised her parents that she would quit music; on a family trip to Myanmar, they discovered that she had not done so after fans of hers approached her in the street after recognising her from billboards.
[19] The following May, she released "Another Week",[20] which she wrote while depressed following a breakup in lockdown; the song was produced by Usher Lavelle,[5] and featured double handclaps.
[31] In December 2023,[33] she and fellow Loud LDNers Charlotte Plank, Caity Baser, and Venbee[4] appeared on Dork's 2024 Hype List.
[35] Tun's music videos regularly feature the fictitious drug "Inphanta-C" to signal the transition between fantasy and reality, which she uses as a metaphor for the façade people put up while online.
[25] Other influences include anime and death metal;[39] she told Clash in January 2021 that she had got into the genre after watching videos from Hellfest, and that she had been fascinated by its aggressive amelodic energy.