. . . . . . "Violoncello concerto opus 49" . . . "Violoncello concerto Opus 49" . "Violoncello concerto : Op 49. Reduction for violoncello and piano by the composer" . . . "Violoncello concerto, op. 49" . . "Violoncello concerto : Opus 49" . . . . . "Violoncello concerto. Op. 49" . . .