C sharp minor, op.opsth. C sharp minor, op.27 no.1 F sharp minor, op.48 no.2 G sharp minor, op. 33, no. 1 Nocturne in C-sharp minor, op. posth No.20 in c sharp minor,op.posth Nocturne in C-sharp minor,op.posth. No.7 in C sharp minor, op.27 no.1 No.14 in F sharp minor, op.48 no.2 C sharp minor Etudes, op.10