Schott Altblockflöten-Duettbuch, By Birgit Baude and Barbara Hintermeier: Duets for Alto Recorders, 120 duets from eight centuries, Contents: Sommerkanon, Pleni sunt coeli, Minuet (Bannister), Sarabande (King), Sonate F-Dur (Telemann), Duo (Händel), Doucement (de Boismortier), Sonata prima (Braun), Suite 1 (Naudt), Tanzstücke (Genzmer), Perpetuum Mobile (Dieterich), And many more, Intermediate level