Clarinetists, please check out our newest edition, an adaptation for clarinet and piano of Two Pieces: Pensiero and Allegro appassionato by the renowned English composer and violist Frank Bridge. Whereas the Pensiero is restrained and dark, the Allegro appassionato in contrast is exuberant and bright.Clarinetists, please check out our newest edition, an adaptation for clarinet and piano of Two Pieces: Pensiero and Allegro appassionato by the renowned English composer and violist Frank Bridge. Whereas the Pensiero is restrained and dark, the Allegro appassionato in contrast is exuberant and bright.