Book VII. 2 Duets in all positions (difficult), by Hauptmann
and De Bériot. (11807 s).
Book VIIA. 3 Duets in all positions (difficult), by Haydn, J. B. Viotti, and Campagnoli. (11807 a).
and De Bériot. (11807 s).
Book VIIA. 3 Duets in all positions (difficult), by Haydn, J. B. Viotti, and Campagnoli. (11807 a).