Music Sources and Collections. These essays, many concerning unknown or unexplored works, cover the 16th and early to mid 17th centuries. The studies involve new compositions, music manuscripts and editions, and documents relating to Giovanni Gabrieli, Alfonso Ferrabosco the Elder, Adam Gumpelzhaimer, John Coprario, John Dowland and others. Charteris elucidates contemporary performance practice in relation to works by Gabrieli, investigates printed music editions that originated from the Church of St Anna, Augsburg, and evaluates materials in European collections.