Ursula Dütschler Ursula Dütschler is a Swiss fortepianist and harpsichordist. For Musica Omnia she collaborated with flautist Douglas Worthen in works by Boismortier. Performed in: J. B. de Boismortier: Sonatas for flute and harpsichord J. B. de Boismortier: Sonatas for flute and harpsichord – Digital Download Performed compositions by: Joseph Bodin de Boismortier Joseph Bodin de Boismortier