3 Nocturnes op.15 3 nocturnes, op. 15 3 Nocturnes op.15; 3 Nocturnes,op.15 3 nocturnes, op. 9 3 Nocturnes op.9 3 Nocturnes op.9; Nocturnes op.15 2 nocturnes, op. 55 2 nocturnes op. 27