string quartets op.18, no.3&6 String Quartets op.18, No.3&6 string quartet op.33 no.3 string quartet op.59 no.2 string quartets op.76 nos. 2-4 string quartets op.18/1 & op.127 string quartets, op. 6 no. 1 & 2 String quartets op. 54 nos. 1-3 string quartets op.127&132 string quartets opp.127 & 132