Gloria has been writing and performing music since childhood, at first aspiring to become an opera singer - through a twist of fate she ended up at drama school in London instead, subsequently working for the stage, film and radio, starring in international productions such as Babylon Berlin and Christian Petzold’s Berlinale winner Undine (2020). 

Wanting to further explore a multidisciplinary approach that combined her interest in performance, visual art and sound, De Oliveira studied Fine Art at HFBK Hamburg and at École nationale supérieure des beaux-arts de Paris. Her experimental moving image works have been screened and awarded at film festivals around the world and in 2013, she was selected for the Talent Campus at the 63rd Berlin International Film Festival.

In 2017 she began releasing demos to the internet with the Synthwave project lovespells, leading up to the 5-track EP Lua Azul. In 2018, Gloria won the Krach + Getoese prize, Hamburg’s award and support programme for up-and-coming musicians, which enabled her to work on her two self-produced EPs La Rose de Fer and Lèvres de Sang (named after the vampire film classics by Jean Rollin) at the analogue studio Clouds Hill Recordings. Both were released digitally & on limited edition cassette through her own imprint La Double Vie and the cult cassette label Dispersion in 2019. 

In early 2020 her debut album Fascination was released via Reptile Music & Cargo Records on CD and Vinyl, including remixes by artists such as Gudrun Gut, Box And The Twins, Tellavision and Fragrance.

In 2021, she composed & produced the score for Peter Thiers’ play Paradiesische Bauten, which premiered at the renowned Thalia Theater in Hamburg. In February 2022, she was commissioned to score and invited to play live by art director Leith Clark at Turkish designer Bora Aksu's Autumn/Winter 22/23 Catwalk show during London Fashion Week. In the summer of 2023, she presented her Commissioned Work SEREA at Pop-Kultur Berlin - a project inspired by Homer’s sirens via Bossa Nova and Fado.

Her most recent album Oceans of Time, a collaboration with David Lynch-protegé and sound designer Dean Hurley, was released in September 2022 via Sacred Bones Records and recommended as "an ethereal gem" in a 9/10 review by Loud and Quiet Magazine. The duo presented the album live for the first time in two exclusive European shows in December 2023, first at Berlin’s Silent Green and then at Vienna’s Volkstheater at Desertshore Festival.

In March ‘23, she was invited as an official artist to SxSW and performed at the coveted Levitation showcase at Hotel Vegas, among other shows. Other recent live highlights include Synästhesie Festival in Berlin, as well as performances at Way Out West, Grauzone Festival and the upcoming Maifeld Derby.