Carl Nielsen’s Fantasy Piece for clarinet and piano is an early work, written between the ages of 16 and 18, while he was a member of the military band in the Danish town of Odense. With this miniature, he gave proof of his mature compositional talent on the one hand, and of the socialisation through the music of the classic and early romantic eras on the other. With its skilful interconnection of Italianate cantabilità and brilliant suppleness, the two-part Fantasy Piece offers a welcome change in the clarinet repertoire. This edition is based on the sole surviving source, long considered a copy, in Copenhagen’s Royal Library, which has since been ascertainably identified as an autograph manuscript.