These eight pieces have been selected from a collection of 18th century music for three clarinettes. The original title reads: "Partia a Tre". The collection consists of thirty short pieces, all of them anonymous, except for number one in this book. 'Di Rösser' is probably Valentin Roeser, clarinettetist, composer and author of "Essai d'instruction à l'usage de ceux qui composent pour la clarinettete et le cor" (1764).
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