| 作曲者 | Olli Mustonen (b. 1967) |
| タイトル | Frei, aber einsam |
| サブタイトル | Invention for violoncello solo |
| 出版社 | Schott（ショット） |
| シリーズ名 | Cello Library |
| 楽器編成 | cello |
| 品番 | 9790001159203 |
| 難易度 | 上中級〜上級 |
| 形状 | 8 ページ・Saddle stitching |
| 演奏時間 | 4分 |
| 作曲年 | 2014年 |
| 出版年 | 2017年 |
| 出版番号 | CB 283 |
| ISMN | 9790001159203 |
Commissioned by the Concertgebouw Brügge and the London Wigmore Hall, this work was written in 2014. It is dedicated by Olli Mustonen to the outstanding British cellist Steven Isserlis who also performed the world premiere. With its frequent, surprising changes of tempo, yet steady note values, the music of this short invention hints at the title of the work.