Band members Hollie Singer and Gwenllian Anthony grew up together in Carmarthen and have known each other since the age of three. After forming a band and performing in the town, they remained without a drummer, and met current drummer Heledd Owen at their first performance. The band were taken on by head of Libertino Records, Gruff Wyn Owen. Singer and Owen study music at universities in south Wales and London respectively, while Anthony works at Carmarthen venue the Parrot. Adwaith first appeared on the Welsh language music scene to a wide audience at Welsh Language Music Day 2017, where the group performed at Womanby Street's Castle Emporium, releasing new music and joining a number of other up and coming Welsh artists as part of the organisation's promotional campaign. As part of the day, Wales Online author David Owens names the band in his "75 songs to celebrate Welsh Language Music Day" list. In July 2017, the group were named in the lineup for the 2017 Festival N°6 in Portmeirion. The "post-rock girl group" were billed as part of the BBC Wales and Arts Council Wales’ music project Horizons Gorwelion which each year promotes 12 selected contemporary independent musicians in Wales. The group also appeared on the BBC Music Introducing stage at Latitude Festival in 2017. The group were again listed in September 2017, this time for Swn Festival in Cardiff. The band played the event's Discovery Day at an event which included names such as Courtney Barnett and Boy Azooga. David Owens of Wales Online again praised the band with inclusion in his "The 57 greatest songs from Wales in 2017" list. In December 2017 the band were announced as recipients of BBC Cymru Wales and Wales Art Council funding under the Horizons Gorwelion scheme, receiving part of the £35,000 fund shared among contemporary independent Welsh musicians. That same month, the group launched their debut music video, "FEMME", which combined a "jangly C86 indie pop sound" with the "cheeky and bold with an important message". The band were named as part of the 12 name shortlist for the 2018 edition of Horizons Gorwelion. In 2018 the group performed at Welsh music showcase FOCUS Wales, held at Wrexham's Ty Pawb venue, performing a "stripped-back" set including a cover of a song by Childish Gambino. The event has been described as Wales' biggest music industry event led by talks and advice from industry figures. The group also supported Gwenno at Islington Assembly Hall. The band also featured on the Green Man Rising Stage in the Brecon Beacons for Green Man Festival 2018, and launched their single "Gartref" at Cardiff's Clwb Ifor Bach. The band describe the single as relating to "a longing and not having a home, and not having a safe space." The band have performed at Wales Goes Pop, Future is Female festival, and started their own FEMME nights intended to offer a safe space to women. Performers at FEMME have included Ani Glass, Chroma, Serol Serol, Gwenno and Patricia Morgan from Datblygu. The band's single, "Fel i Fod", is their most streamed to date with over half a million streams, and was used by the Football Association of Wales women's team in the buildup to their fixtures. The band released their debut album, "Melyn" in October 2018, recorded at Giant Wafer Studios in Powys and at Music Box in Cardiff, and produced by Estrons bass player Steff Pringle. The album's visually striking sleeve was designed by H. Hawkline. The band's single, Gartref, was remixed in 2018 by Manic Street Preachers member James Bradfield, and their defiant post-punk track "Y Diweddaraf" was named Clash Magazine's Track of the Day for the 1st of October. The band were featured in The Guardian for a piece on the growth of Welsh language pop culture. One week after releasing their album, the band performed their work at Sŵn Festival at Clwb Ifor Bach in Cardiff. The band again participated in Welsh Language Music Day in February 2019 and in June at the Tafwyl festival at Cardiff Castle, a three-day "celebration of Welsh music". In April 2019 the band appeared at Diverse Records' special event in Newport for Record Store Day 2019, performing at McCann's Rock and Ale Bar in the city. In July they launched a new double A-side with the title track, "Hey!". The band's tracks were further promoted when Gizmodo reported on the Cân y Cymry playlist on Spotify, where the band were named in the top 5. Huw Stephens covered the band in his Cymru Rising programme for BBC Radio 4. In July the band performed at Cardigan Castle, and announced an October tour of independent UK venues including Poetry Club, Yes, and The Victoria, alongside Mellt and Papur Wal. The band will perform in January 2020 at Rockaway Beach festival, alongside The Jesus and Mary Chain and Fontaines DC, in Bognor Regis. In November 2019 the band were announced as winners of the Welsh music prize.
