Duet for 2 violins in A major WoO 34 Sonata for two violins in C major, op. 56 Concerto for 2 violins in D minor, BWV 1043 Sonata for 2 Violins in C major,Op.56 Concerto for 2 violins in D minor,BWV 1043 Fugue for 2 violoncells in A major G 73 Sonata for 2 Violins in C major,Op.3 No.3 Fugue for 2 violoncells in A major G 73/5 Concerto for 2 mandolins in G major, RV 532 Fugue for 2 violoncellos in F major G 73