We do our best to grade visual the items according to the Goldmine Grading Standards. If you are unsatisfied with some of these records, we offer you full money back guarantee. 33cx 1287 Johanna Martzy Bach Unaccompanied Violin Sonatas JOHANN SEBASTIAN BACH - The Unaccompanied Violin Sonatas - Volume Two Sonata for Solo Violin - No. 3 in a minor Sonata for Solo Violin - No. 4 in d minor (Partita No.