Gustav Düben the Elder served as chapel master at the royal court in Sweden in the 17th century. He was an avid collector of music manuscripts; the collection that bears his name contains about 2300 pieces. We'll sample some of these rarely-heard gems, by composers like Schmelzer, Carissimi, Caterina Giani, and Dieterich Buxtehude.

• Johann Heinrich Schmelzer: Sonata a 5 in D minor. Performed by Acronym.
• Giacomo Carissimi: Doleo et pœnitet me. Performed by Acronym.
• Caterina Giani Liebster: Jesu, trautes Leben. Performed by Acronym & Helene Brunet, soprano.
• Johann Jacob Löwe: Sonata a 6 in E-flat major. Performed by Acronym.
• Dieterich Buxtehude: O Fröhliche Stunden. Performed by Hans-Jörg Mammel, tenor & La Fenice.
• Dieterich Buxtehude: Jesu meines Lebens Leben. Performed by Vox Luminis & Ensemble Masques.
• Andreas Kirchhoff: Sonata a 6 in G minor. Performed by Acronym.
• Dieterich Buxtehude: Membra Jesu Nostri: Ad Genua. Performed by Cantus Cölln.
• Dieterich Buxtehud: Herr, wenn ich nur dich hab. Performed by Hans-Jörg Mammel, tenor & La Fenice.