#!/usr/bin/env perl
use strict;
use warnings;

use MIDI::Util qw(setup_score midi_format);
use Music::MelodicDevice::Transposition;

my @notes = qw(C4 E4 D4 G4);

my $md = Music::MelodicDevice::Transposition->new(
    scale_note => 'C',
    scale_name => 'major',
    verbose => 1,
);

my $score = setup_score();

@notes = midi_format(@notes);
$score->n('qn', $_) for @notes;
$score->r('hn');

for my $i (1, 2, 3) {
    my $transposed = $md->transpose($i, \@notes);
    @$transposed = midi_format(@$transposed);
    $score->n('qn', $_) for @$transposed;
    $score->r('hn') unless $i == 3;
}

$score->write_score("$0.mid");
