Tractatus (1986) for flute solo and chamber ensemble, commissioned by the flutist Robert Aitkin and The New Music Concerts in Toronto. The soloist engages in a lively and dynamic exchange with the ensemble: a vibrant and energetic dialogue which is a play of light and darkness, colour and contrasts. The work concludes with a reprise of the middle section.
| Arrangement | Chamber Group, Flute |
| Genres | Post-1900 |
| Format | Score |
| NumberOfPages | 44 |
| Media | Sheet Music |
| Publisher | Edition Wilhelm Hansen |
| Contributors | Nordheim, Arne (Artist) |
| Language | English |
| ISBN | 9788759869307 |