string quartets opp.51 & 105 string quartets opp. 12 & 13 String quartets opp. 12 & 13 string quartets opp.127 & 132 string quartets opp.34 & 96 string quartets nos.14 & 15 string quartets op.127&132 string quartets nos. 1 & 2 String Quartets opp.127 & 132 string quartets nos.1 & 2