String Quartets Nos.5 & 6 String quartets nos. 1 & 2 String Quartets Nos.5 & 7 String quartets Nos. 1 & 2 String quartets nos. 1-3 string quartets opp.34 & 96 string quartets opp.51 & 105 String quartet no. 1 String quartet no. 2 String quartet op. 6, 1