Organist:
- Organ Autumn Straelen (D) Bach Präludium E flat-major
- Organ Autumn Straelen (D) Fuge E flat-major
- Organ Festival Wolsztyn (Poland) Bach: Präludium C-major BWV 547
- Video Sinfonia da Davide da Bergamo (Conrad Zwicky, organ Saint Peter and Paul, Zürich)
Viola player:
- Bavaria Streichtrio: Mozart Divertimento Es-Dur
Karsten Gebhardt, violin, Conrad Zwicky, viola, Andrea Polgar Gebhardt, violoncello - Balkanyi-Quartet: János Balkányi, Andrzej Kilian, violins, Conrad Zwicky, viola, Akiko Kanamaru, Violoncello:
Schubert: «The Death and the Maiden»
Composer:
- Duo for two violins: Igor Karsko and Jana Karskova, violins (see www.wiediscon.ch)
- Concerto for Doublebass and Strings
- Taiswald Video 2019
- 3rd and 4th movement as ballett. Choreografie by Hyonjun Rhee (Principal Dancer in Tulsa Ballet)