Nicolas Koeckert, Rudolf Koeckert, violins

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12 Etudes: No. 1 in G Major (2:26) -- 12 Etudes: No. 2 in D Minor (1:19) -- 12 Etudes: No. 3 in E-Flat Major (1:30) -- 12 Etudes: No. 4 in D Minor (1:54) -- 12 Etudes: No. 5 in B-Flat Major (2:32) -- 12 Etudes: No. 6 in E Major (1:55) -- 12 Etudes: No. 7 in F Major (3:44) -- 12 Etudes: No. 8 in B Minor (2:09) -- 12 Etudes: No. 9 in G Major (1:57) -- 12 Etudes: No. 10 in F Minor (2:34) -- 12 Etudes: No. 11 in C Major (3:49) -- 12 Etudes: No. 12 in A Minor (3:27) -- Duos, Book 1, No. 1 in E-Flat Major: I. Moderato (6:38) -- Duos, Book 1, No. 1 in E-Flat Major: II. Rondo. Allegro (5:19) -- Duos, Book 1, No. 2 in G Major: I. Maestoso (6:09) -- Duos, Book 1, No. 2 in G Major: II. Rondo (5:06) -- Duos, Book 2, No. 2 in C Major: I. Allegro con moto (5:30) -- Duos, Book 2, No. 2 in C Major: II. Adagio - Andante con variazione (9:09)