Critics have described baritone Sepp Hammer as delivering “masterful and expressive solos” (San Francisco Classical Voice) and showing “warm baritone gravity” (The Boston Globe). Highlights of his 2025-2026 season include the US premiere of Rejcha’s Te Deum with Chora Nova and Bach Magnificat with Soli Deo Gloria. In August 2025, Sepp was a member of the week-long American Bach Soloists Academy where he participated in daily masterclasses and was a featured soloist in a program of three Bach cantatas under conductor Jeffrey Thomas.
In the 2024-2025 season, Sepp appeared as soloist in Zipoli Missa Encarnación with California Bach Society, Mozart Requiem with Chora Nova, Bach St. Matthew Passion as the High Priest with Cantata Collective under Nicholas McGegan, and Vaughan Williams Dona Nobis Pacem with Vallejo Choral Society. In prior seasons, he joined California Bach Society for performances of Bach St. Matthew Passion (as Jesus), Zelenka Missa Votiva, Charpentier Messe des Morts, and Carissimi Jonas, in which he portrayed the voice of God, “with booming authority” (San Francisco Classical Voice).
His other concert engagements in recent seasons have included Bach’s cantata Aus der Tiefe with Santa Cruz Chorale, Handel Dixit Dominus with San Francisco Choral Society, Rutter Mass of the Children with Solano Symphony, Zelenka Gloria with Chora Nova, Vaughan Williams Five Mystical Songs with Contra Costa Chorale, and, with various ensembles, Schütz Symphoniae Sacrae, Bach B Minor Mass, Haydn Lord Nelson Mass, Schubert Mass in G Major, Brahms Requiem, Fauré Requiem, Duruflé Requiem. With the Philharmonia Baroque Orchestra and Chorale, Sepp sang the role of Eupolemus in Handel Judas Maccabaeus.
On the opera stage, Sepp has appeared as Orest (Elektra) with Berkeley Elektra Project, Pistola (Falstaff) with Cinnabar Theater, the Speaker (Die Zauberflöte) with Pocket Opera, Malatesta (Don Pasquale) with North Bay Opera, and Wagner (Gounod Faust) with Opera San Jose. His other operatic repertoire encompasses a wide range of roles, including Aeneas (Dido and Aeneas), Conte Almaviva (Le Nozze di Figaro), the title role in Don Giovanni, Don Alfonso (Così fan tutte), Falke (Die Fledermaus), Escamillo (Carmen), Schaunard (La Bohème), and John Proctor (The Crucible).
Sepp holds a master’s degree in vocal performance from New England Conservatory and a bachelor’s degree in physics from the University of California, Berkeley. He is the creator of Perform CMS, a website hosting and content management solution for easy-to-maintain websites for freelance artists (like the website you are visiting now!).