| 作曲者 | Dana Wilson (b. 1946) |
| タイトル | Vortex (score and parts) |
| 出版社 | Boosey & Hawkes（ブージー＆ホークス） |
| シリーズ名 | Windependence: Artist Level |
| 楽器編成 | Wind band |
| 品番 | 9790051660285 |
| 演奏時間 | 11分 |
| 出版番号 | BHI 6102032 |
| ISMN | 979-0051660285 |
A vortex is a whirling mass, such as a tornado or whirlpool, which is created when a source of momentum causes a thick layer of unstable stratification to move with ever stronger tangential velocity as the medium (air or water) converges ito a smaller radius. The vortex gradually gains power and momentum while, ironically, forming a vacuum at its center. It is this image of opposites-one influenced by the other-that was the genesis of this piece. The piece alternates between moments of extreme stasis and whirling energy. While the work is not a concerto, the piano often serves as the source of momentum, with the ensemble-static at first-gradually pulled into the vortex.