In 2010 Elissa Huber made her stage debut in the musical theatre genre at the Deutsches Theater in Munich (Maureen / RENT). Further engagements took her to the Operettenhaus Hamburg (La Rosa / SISTER ACT), to Theater 11 Zurich (Lisa Wartberg / ICH WAR NOCH NIEMALS IN NEW YORK) as well as on tour throughout Europe (Ludovika & Frau Wolf / ELISABETH).

In 2013, despite an established musical career theatre, she switched to classical soprano and completed her Master's degree with Jane Thorner-Mengedoht at the Zurich University of the Arts in 2015.

She was then engaged at the opera studio of Milan's Teatro alla Scala, where she made her opera debut as the Erste Dame in ZAUBERFLÖTE under the direction of Peter Stein and the musical direction of Adam Fischer. In 2016 she was awarded 3rd place at the BUNDESWETTBEWERB GESANG.

Until the end of the 2019 season she was an ensemble member at the Konzert Theater Bern, where her roles included Donna Anna in DON GIOVANNI, Fiordiligi in COSÍ FAN TUTTE and Micaela in CARMEN.
She made her Vienna debut as Sylva Varescu in Peter Lund's new production of the operetta DIE CSARDASFÜRSTIN at the Volksoper Wien.

In summer 2019 she debuted at the Seefestspiele Mörbisch as Lisa in a new production by Leonard Prinsloo of Lehár's operetta LAND DES LÄCHELNS. Further milestones follow in the 19/20 season, including Rosalinde, also in a new production of FLEDERMAUS at the Oper Graz, the title role in Marc Turnage's opera ANNA NICOLE at the Staatstheater Wiesbaden, and Kate in the revival of KISS ME KATE at the Volksoper Wien. Other highlights of recent seasons include her debut at Oper Frankfurt as Donna Elvira (Don Giovanni), role debut Hannah Glawari (Merry Widow) and Emilia Marty (The Makropulos Affair) at Staatstheater Wiesbaden.

Projects in the current season include the house debut at the Oper Köln as Hannah Glawari (Merry Widow), and a new production of Der Freischütz (as Agathe) at the Bregenzer Festspiele.