Gwyneth Rix is a Canadian-American mezzo-soprano born and raised in the Greater Philadelphia area. While she began her formal musical studies at the age of six as a pianist, she has been singing her whole life. She quickly switched her concentration to singing after beginning voice lessons at 13. In 2017, Gwyneth was the youngest ever singer to join Vox Ama Deus. She later went on to attend the Philadelphia International Music Festival in 2018, the Bel Canto Institute in Florence in 2019, and the Washington National Opera Institute in 2021. She made her operatic debut in January of 2020 as the titular character in Amahl and the Night Visitors. That same year, she won an encouragement award in her region of the Schmidt Vocal Competition, of which she would be a finalist in 2021. Throughout high school, Gwyneth was consistently involved with both the Delaware Valley Opera Company and the Harriton Theater Company.

​Gwyneth began her university studies in 2021 with a full scholarship at Boston University in the studio of Lynn Eustis, from which she graduated Summa Cum Laude and Pi Kappa Lambda with a minor in Philosophy. During her time in Boston, Gwyneth was a winner of the 2022 Calliope's Call young singer competition, a first place winner of the Boston NATS Student Auditions, and a first and second place winner of the New England NATS National Student Auditions. At Boston University, she performed regularly with the BU Singers and BU Symphonic Chorus as both a chorister and soloist. She has sung premiers of works by student composers and performed in the opera scenes program every semester. Gwyneth is passionate about early and 20th-century choral music and subs regularly with the Church of the Advent choir in Boston. She attended Songfest (under the support of the Art Song Foundation of Canada), the Berlin Opera Academy, and the Royal College of Music's study abroad program, where she sang with the Symphony Chorus under the late Sir Andrew Davis.

Her concert credits during her undergraduate studies included the mezzo-soprano solos in Duruflé's Requiem, Liszt's transcription of Beethoven's Ninth Symphony, Bernstein's Chichester Psalms (quartet), and Corigliano's Fern Hill (cover). Recent roles include Dritte Dame (Die Zauberflöte), La Badessa (Suor Angelica),   and Cherubino (Cover, Le nozze di Figaro). Notable venues include the Kimmel Center in Philadelphia, Symphony Hall in Boston, the Royal College of Music Concert Hall, Theater im Delphi in Berlin, the Cockpit Theater in London, and St. Giles Cathedral, Edinburgh.

In 2025, Gwyneth debuts the role of Arcane in Ensemble Orquesta's production of Handel's Teseo in London and attends the Opera Caledonia Vocal Studio course in Edinburgh. 

Gwyneth will continue her vocal education at McGill University's Schulich School of Music in the studio of Dr. Tracy Smith Bessete this fall.