Opera News calls her “a natural actress…[a] powerhouse mezzo with thrilling, laser-like focus” and “luminous tone.” Opera magazine praises her voice as “stunningly rich.”

Katharine Goeldner's unique gifts have taken her to stages throughout the world in an astonishing range of repertory.

Katharine's return to the Santa Fe Opera in their 2021 season, as Madame Larina in Eugene Onegin, was described in The New Mexican as “a bit of luxury casting.” That summer, she also presented Warning: Mezzo Ahead!, a series of two recitals with pianist Carol Anderson for the Santa Fe Wagner Society. In January 2022, she makes her Atlanta Opera debut in a new role –– Ruth in The Pirates of Penzance. She then debuts at Tulsa Opera as Herodias in Salome. In June, she will create the role of Iris in the world premiere of Tobias Picker and Aryeh Lev Stollman’s Awakenings at Opera Theater of Saint Louis,  followed in October by a concert performance of the new opera Arkhipov by Peter Knell and Stephanie Fleischmann, with Katharine singing the role of Olga Arkhipova.

Katharine’s performances in 2019 and 2020 included her role debut as a “deliciously slippery,” “snake-like” Annina in Der Rosenkavalier at The Metropolitan Opera, directed by Robert Carsen and conducted by Sir Simon Rattle; an exciting last-minute performance as the Marquise de Berkenfeld in Laurent Pelly’s production of La fille du Regiment, also at the Met, costarring Kathleen Turner, Pretty Yende, and Javier Camarena and conducted by Enrique Mazzola; a “powerful and velvety” Fricka in Die Walküre in Augsburg; Berio's Folk Songs with the Mozarteum Orchestra of Salzburg; Verdi’s Requiem with the Jacksonville Symphony; and a "heady and dark" Brigitta (wanderersite.com) in Die tote Stadt in Toulouse and with RTÉ Dublin. Critics have described Katharine’s performances as Ma Joad in Ricky Ian Gordon and Michael Korie’s The Grapes of Wrath as “consistently stunning” and “a perfect marriage of artist and role.” She created the roles of both Jackie Onassis in David T. Little and Royce Vavrek’s JFK and Peggy Ophuls in Jack Perla’s Shalimar the Clown.