| Title | Instrumentation | Duration | Year of Composition | |
| At the Mercy | String Quartet | 2 Violins, Viola, Cello | 6” | 2026 |
| Scherzo | String Trio | Violin, Viola, Cello | 6’40” | 2026 |
| Teardrop | String Duo | 2 Violins, Violin & Cello, 2 Cellos, Viola and Double Bass | 2′ | 2026 |
| Tiptoes Home | String Quartet | 2 Violins, Viola, Cello | 5’30” | 2024 |
| Block Play | String Quintet | 2 Violins, Viola, Cello, Double Bass | 5′ | 2024 |
| In the Rearview | String Quintet | 2 Violins, Viola, Cello, Double Bass | 4’40” | 2024 |
| Tiptoes Home | String Quintet | 2 Violins, Viola, Cello, Double Bass | 5’20” | 2024 |
| Neo | Piano Quartet | Violin, Viola, Cello, Piano | 15′ | 2021 |
| Glass Embrace | Mixed Chamber | Flute, Clarinet, Piano, Violin, Viola, Cello | 6’30” | 2019 |
Kolten Heeren
Composer Performer