A classically trained pianist, Vos worked as a keyboardist for BØRNS before deciding to pursue a career as a singer-songwriter after the birth of her son in 2015. She first gained attention as a vocalist on the 2016 EDM track “Rolling Dice” by Just a Gent.
Her first solo single, “White Noise”, a song about being a new mother, was released in October 2016. Rolling Stone described it as “a seductive, gauzy, downtempo offering.” The Boston Globe called her single “You Don’t Know About Me” “one of the most highly charged sociopolitical songs of 2017.” In 2018, she teamed with Icona Pop, VÉRITÉ, and Mija to remix “You Don’t Know About Me” in support of the ACLU. Her debut album Words I Never Said was released on November 17, 2017.
In 2017 she toured the US, and performed at the Bonnaroo Music Festival. In February 2018 she embarked on the North American Words I Never Said Tour, with Freya Ridings.
In 2018 she was named a Vevo dscvr Artist to Watch. Her stage name means “she you” in Spanish.
Her five-song EP Watch & Wait was released on January 25, 2019.