He is recognised in the European Baroque scene as a conductor of Baroque operas and oratorios, Viennese Classical music and choral symphonic works, and is also one of the busiest choral conductors in Switzerland.

 

Seidel is musical director of the Rheintaler Bach Choir, the Messiah Choir Zurich and the Concert Choir Sängerbund Uster. He also conducts both choirs of the Protestant parish of Höfe on Lake Zurich: the project choir and the vocal ensemble Höfe. Thanks to his experience in theatre, he is very familiar with musicals and theatre music. He brings this expertise to bear as musical director of the Wiesendangen Choir. A milestone in recent years was the performance of all the important orchestral masses by Joseph Haydn and Wolfgang Amadeus Mozart as conductor of the St. Otmar Choir in St. Gallen from 2015 to 2023.

 

During the 24/25 and 2025/26 seasons, he conducted several concerts featuring works by G. F. Handel (including *Messiah*, ‘Ode for the Birthday of Queen Anne’), as well as a semi-staged performance of C.W. Gluck’s ‘Orfeo et Euridice’ in the Parma version, Carl Orff’s ‘Carmina Burana’, J.S. Bach’s *Christmas Oratorio*, *St John Passion* and *St Matthew Passion*, Franz Schubert’s  *Winterreise* in a version for choir, baritone and piano, as well as several concerts featuring various cantatas by J.S. Bach and a programme of French Romantic choral music (Saint-Saëns, Gounod, among others).

 

Planned for the 2026/27 season are, amongst other works, Johann Sebastian Bach’s Easter Oratorio and various Bach cantatas in different productions and recordings, Gabriel Fauré’s Requiem, Antonín Dvořák’s Stabat Mater, and Christmas concerts featuring A. Vivaldi’s Gloria RV 589.

 

Alexander founded the New Sagittarius Consort Zurich in 1995, with which he has worked on over fifty concert projects, some of which have been performed at international festivals. Internships and assistantships brought him into contact with Herbert Blomstedt, Sir Roger Norrington and Nikolaus Harnoncourt.

 

He has conducted concerts with musicians from the Berlin Staatskapelle, the RSO Berlin, the Basel Symphony Orchestra, the St. Gallen Chamber Soloists, the Southwest German Philharmonic Orchestra Konstanz, as well as the baroque orchestras Stella Matutina Feldkirch, Musica Poetica Freiburg, La Folia Dresden and La Scintilla of the Zurich Opera House, and the chamber orchestra ‘ibaroccoli’ Zurich.

 

As a countertenor, Alexander Seidel has appeared in numerous opera and theatre productions – most recently at Theater Basel – and has sung in numerous solo concerts featuring works by Antonio Caldara, Antonio Vivaldi, George Frideric Handel, Gustav Mahler, Franz Schubert and Antonín Dvořák.

 

In 2018, he made his debut at the Baden-Baden Easter Festival, together with Concerto Melante (Berlin Philharmonic Orchestra and guests), performing music by Bach and Telemann in the Meisterkonzerte.

British composer Thomas Adés composed the cycle ‘Love in Winter’ for him. German composer Manfred Schlenker dedicated a cycle of biblical duets to him, based on Dvorak's ‘Biblical Songs’.

In 2016, Swiss composer Frederic Bolli composed the first full-length German-language song cycle for countertenor and piano, ‘Trödelmarkt der Träume’ (Flea Market of Dreams), and in 2017, Louize Labès' sonnets for countertenor and lute. Both cycles were premiered by Alexander Seidel.

 

Alexander Seidel is principal organist at the Evangelical Reformed parish of Höfe on Lake Zurich and has given solo concerts throughout Switzerland, as well as in Berlin, Potsdam, Moscow and St Petersburg, amongst other places. He has performed on many historical instruments across Europe. His art of improvisation has been praised by the press as “simply brilliant” (Märkische Allgemeine). As a permanent lecturer at the International Piano Academy in Disentis Abbey, he teaches young, up-and-coming talents from all over the world to play the organ and piano.

 

In 2017, a Telemann CD was released on the deutsche harmonia mundi label with the Concerto Melante.

 

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He is recognised in the European Baroque scene as a conductor of Baroque operas and oratorios, Viennese Classical music and choral symphonic works, and is also one of the busiest choral conductors in Switzerland.

 

Seidel is musical director of the Rheintaler Bach Choir, the Messiah Choir Zurich and the Concert Choir Sängerbund Uster. He also conducts both choirs of the Protestant parish of Höfe on Lake Zurich: the project choir and the vocal ensemble Höfe. Thanks to his experience in theatre, he is very familiar with musicals and theatre music. He brings this expertise to bear as musical director of the Wiesendangen Choir. A milestone in recent years was the performance of all the important orchestral masses by Joseph Haydn and Wolfgang Amadeus Mozart as conductor of the St. Otmar Choir in St. Gallen from 2015 to 2023.

 

During the 24/25 and 2025/26 seasons, he conducted several concerts featuring works by G. F. Handel (including *Messiah*, ‘Ode for the Birthday of Queen Anne’), as well as a semi-staged performance of C.W. Gluck’s ‘Orfeo et Euridice’ in the Parma version, Carl Orff’s ‘Carmina Burana’, J.S. Bach’s *Christmas Oratorio*, *St John Passion* and *St Matthew Passion*, Franz Schubert’s  *Winterreise* in a version for choir, baritone and piano, as well as several concerts featuring various cantatas by J.S. Bach and a programme of French Romantic choral music (Saint-Saëns, Gounod, among others).

 

Planned for the 2026/27 season are, amongst other works, Johann Sebastian Bach’s Easter Oratorio and various Bach cantatas in different productions and recordings, Gabriel Fauré’s Requiem, Antonín Dvořák’s Stabat Mater, and Christmas concerts featuring A. Vivaldi’s Gloria RV 589.

 

Alexander founded the New Sagittarius Consort Zurich in 1995, with which he has worked on over fifty concert projects, some of which have been performed at international festivals. Internships and assistantships brought him into contact with Herbert Blomstedt, Sir Roger Norrington and Nikolaus Harnoncourt.

 

He has conducted concerts with musicians from the Berlin Staatskapelle, the RSO Berlin, the Basel Symphony Orchestra, the St. Gallen Chamber Soloists, the Southwest German Philharmonic Orchestra Konstanz, as well as the baroque orchestras Stella Matutina Feldkirch, Musica Poetica Freiburg, La Folia Dresden and La Scintilla of the Zurich Opera House, and the chamber orchestra ‘ibaroccoli’ Zurich.

 

As a countertenor, Alexander Seidel has appeared in numerous opera and theatre productions – most recently at Theater Basel – and has sung in numerous solo concerts featuring works by Antonio Caldara, Antonio Vivaldi, George Frideric Handel, Gustav Mahler, Franz Schubert and Antonín Dvořák.

 

In 2018, he made his debut at the Baden-Baden Easter Festival, together with Concerto Melante (Berlin Philharmonic Orchestra and guests), performing music by Bach and Telemann in the Meisterkonzerte.

British composer Thomas Adés composed the cycle ‘Love in Winter’ for him. German composer Manfred Schlenker dedicated a cycle of biblical duets to him, based on Dvorak's ‘Biblical Songs’.

In 2016, Swiss composer Frederic Bolli composed the first full-length German-language song cycle for countertenor and piano, ‘Trödelmarkt der Träume’ (Flea Market of Dreams), and in 2017, Louize Labès' sonnets for countertenor and lute. Both cycles were premiered by Alexander Seidel.

 

Alexander Seidel is principal organist at the Evangelical Reformed parish of Höfe on Lake Zurich and has given solo concerts throughout Switzerland, as well as in Berlin, Potsdam, Moscow and St Petersburg, amongst other places. He has performed on many historical instruments across Europe. His art of improvisation has been praised by the press as “simply brilliant” (Märkische Allgemeine). As a permanent lecturer at the International Piano Academy in Disentis Abbey, he teaches young, up-and-coming talents from all over the world to play the organ and piano.

 

In 2017, a Telemann CD was released on the deutsche harmonia mundi label with the Concerto Melante.

 

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