Nocturne No.1 in B-flat minor, Op.9 No.1 Nocturne no. 1 in E flat minor, op. 33 no. 1 1 Nocturne No.1 in B flat minor, Op.9 No.1 Nocturne NO. 1 in B flat minor, op. 9 No. 1 Nocturne in B flat minor op.9 no.1 Nocturne in E flat major, op.9 no.2 Nocturne no.2 in E flat, op.9 no.2 No.1 in B flat minor, op.9 no.1 No.1 in b flat minor,op.9 no.1 Nocturne in E flat major, op. 9 no. 2