Songs
- Scheherazade reloaded for (almost) 1001 Strings (Arr. for 4 Pianos by Mischa Cheung)Gershwin Piano Quartet
- Danse macabre, Op. 40 (Arr. for 4 Pianos by Benjamin Engeli)Gershwin Piano Quartet
- Lieutenant Kijé, Op. 60: IV. Troika (Arr. for 4 Pianos by Mischa Cheung)Gershwin Piano Quartet
- Lieutenant Kijé, Op. 60: II. Romance (Arr. for 4 Pianos by Mischa Cheung)Gershwin Piano Quartet
- Lieutenant Kijé, Op. 60: I. Birth of Kijé (Arr. for 4 Pianos by Mischa Cheung)Gershwin Piano Quartet
- 14 Romances, Op. 34: No. 14, Vocalise (Arr. for 4 Pianos by Benjamin Engeli)Gershwin Piano Quartet
- Fantasy on "Porgy & Bess“: Rumble (Arr. for 4 pianos by Benjamin Engeli & Stefan Wirth)Gershwin Piano Quartet
- Tango Fugue on a Theme by Astor PiazzollaGershwin Piano Quartet
- An American in Paris (Arr. for 4 Pianos by Stefan Wirth & Marlis Walter)Gershwin Piano Quartet
- Night 'n' Day (Arr. for 4 Pianos by Gershwin Piano Quartet)Gershwin Piano Quartet
- La Valse (Arr. for 4 Pianos by Stefan Wirth)Gershwin Piano Quartet
- Danse macabre pour orchestre in G Minor, Op. 40 (Arr. for 4 Pianos by Benjamin Engeli)Gershwin Piano Quartet
- Porgy & Bess: Oh, I can't sit down (Arr. for 4 Pianos by B. Engeli & S. Wirth)Gershwin Piano Quartet
- Porgy & Bess: I loves you, Porgy (Arr. for 4 Pianos by B. Engeli & S. Wirth)Gershwin Piano Quartet
- Lieutenant Kijé, Op. 60: III. Troika (Arr. for 4 Pianos by Mischa Cheung)Gershwin Piano Quartet
- Lieutenant Kijé, Op. 60: III. Troika (Arr. for 4 Pianos by Mischa Cheung)Gershwin Piano Quartet
- Lieutenant Kijé, Op. 60: I. Birth of Kije (Arr. for 4 Pianos by Mischa Cheung)Gershwin Piano Quartet
- Oh, Lady Be Good [Arr. by Gershwin Piano Quartet]Gershwin Piano Quartet
- Summertime [Arr. by Niklaus Bärtsch]Gershwin Piano Quartet
- Rhapsody in Blue [Arr. for Piano Quartet by André Desponds]Gershwin Piano Quartet
- A Foggy Day [Arr. by Stefan Wirth]Gershwin Piano Quartet
- The Man I Love [Arr. by Gershwin Piano Quartet]Gershwin Piano Quartet
- Love Is Here to Stay [Arr. by Gershwin Piano Quartet]Gershwin Piano Quartet
- I Got Rhythm [Arr. for Piano Quartet by André Desponds]Gershwin Piano Quartet
- An American in Paris [Arr. by Stefan Wirth and Marlis Walter]Gershwin Piano Quartet
- The Man I Love (Arr. for 4 Pianos by Gershwin Piano Quartet)Gershwin Piano Quartet
- I Got Rhythm (Arr. for 4 Pianos by André Desponds)Gershwin Piano Quartet
- Lieutenant Kijé, Op. 60: II. Romance (Arr. for 4 Pianos by Mischa Cheung)Gershwin Piano Quartet