string quartets op.76 nos. 2-4 String Quartets Op.76 Nos. 2-4 String quartets op. 54 nos. 1-3 string quartets, op. 6 no. 1 & 2 string quartet op.59 no.2 string quartets nos. 1-3 string quartet op.33 no.3 string quartets op.18, no.3&6 string quartets nos.1-3 String quartets nos. 1-3