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in-c
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#!/usr/bin/env perl
use strict;
use warnings;
##
# This is a Perl orchestration of Terry Riley's venerable composition, "In C."
# Writeup: https://techn.ology.net/terry-rileys-in-c-in-perl/
##
use MIDI::Util qw(setup_score set_chan_patch);
my @patches = @ARGV ? @ARGV : qw( 0 8 42 69 );
die "No more than 15 patches allowed\n"
if @patches > 15;
my $channel = 0;
my $score = setup_score( bpm => 120 );
my @phrases;
push @phrases, \&loop
for 1 .. @patches;
$score->synch(@phrases);
$score->write_score("$0.mid");
sub rand4 {
return 1 + int rand 4;
}
sub loop {
$channel++ if $channel == 9;
set_chan_patch( $score, $channel++, shift(@patches) );
# 1
for ( 1 .. rand4() ) {
$score->n( 'qn', 'E4' ) for 1 .. 3;
}
# 2
for ( 1 .. rand4() ) {
$score->n( 'en', 'E4' );
$score->n( 'en', 'F4' );
$score->n( 'qn', 'E4' );
}
# 3
for ( 1 .. rand4() ) {
$score->r('en');
$score->n( 'en', 'E4' );
$score->n( 'en', 'F4' );
$score->n( 'en', 'E4' );
}
# 4
for ( 1 .. rand4() ) {
$score->r('en');
$score->n( 'en', 'E4' );
$score->n( 'en', 'F4' );
$score->n( 'en', 'G4' );
}
# 5
for ( 1 .. rand4() ) {
$score->n( 'en', 'E4' );
$score->n( 'en', 'F4' );
$score->n( 'en', 'G4' );
$score->r('en');
}
# 6
for ( 1 .. rand4() ) {
$score->n( 'wn', 'C5' );
$score->n( 'wn', 'C5' );
}
# 7
for ( 1 .. rand4() ) {
$score->r('qn') for 1 .. 3;
$score->r('en');
$score->n( 'sn', 'C4' ) for 1 .. 2;
$score->n( 'en', 'C4' );
$score->r('en');
$score->r('qn') for 1 .. 3;
}
# 8
for ( 1 .. rand4() ) {
$score->n( 'dwn', 'G4' );
$score->n( 'wn', 'F4' );
$score->n( 'wn', 'F4' );
}
# 9
for ( 1 .. rand4() ) {
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
$score->r('en');
$score->r('qn') for 1 .. 3;
}
# 10
for ( 1 .. rand4() ) {
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
}
# 11
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
}
# 12
for ( 1 .. rand4() ) {
$score->n( 'en', 'F4' );
$score->n( 'en', 'G4' );
$score->n( 'wn', 'B4' );
$score->n( 'qn', 'C3' );
}
# 13
for ( 1 .. rand4() ) {
$score->n( 'sn', 'B4' );
$score->n( 'den', 'G4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'F4' );
$score->n( 'qn', 'G4' );
$score->r('den');
$score->n( 'sn', 'G4' );
$score->n( 'dhn', 'G4' );
}
# 14
for ( 1 .. rand4() ) {
$score->n( 'wn', 'C5' );
$score->n( 'wn', 'B4' );
$score->n( 'wn', 'G4' );
$score->n( 'wn', 'Fs4' );
}
# 15
for ( 1 .. rand4() ) {
$score->n( 'sn', 'G4' );
$score->r('den');
$score->r('qn') for 1 .. 3;
}
# 16
for ( 1 .. rand4() ) {
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'C5' );
$score->n( 'sn', 'B4' );
}
# 17
for ( 1 .. rand4() ) {
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'C5' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'C5' );
$score->n( 'sn', 'B4' );
$score->r('sn');
}
# 18
for ( 1 .. rand4() ) {
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'den', 'E4' );
$score->n( 'sn', 'E4' );
}
# 19
for ( 1 .. rand4() ) {
$score->r('dqn');
$score->n( 'dqn', 'G5' );
}
# 20
for ( 1 .. rand4() ) {
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'den', 'G3' );
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'sn', 'E4' );
}
# 21
for ( 1 .. rand4() ) {
$score->n( 'dhn', 'Fs4' );
}
# 22
for ( 1 .. rand4() ) {
$score->n( 'dqn', 'E4' ) for 1 .. 5;
$score->n( 'dqn', 'Fs4' );
$score->n( 'dqn', 'G4' );
$score->n( 'dqn', 'A4' );
$score->n( 'en', 'B4' );
}
# 23
for ( 1 .. rand4() ) {
$score->n( 'en', 'E4' );
$score->n( 'dqn', 'Fs4' ) for 1 .. 5;
$score->n( 'dqn', 'G4' );
$score->n( 'dqn', 'A4' );
$score->n( 'qn', 'B4' );
}
# 24
for ( 1 .. rand4() ) {
$score->n( 'en', 'E4' );
$score->n( 'en', 'Fs4' );
$score->n( 'dqn', 'G4' ) for 1 .. 5;
$score->n( 'dqn', 'A4' );
$score->n( 'en', 'B4' );
}
# 25
for ( 1 .. rand4() ) {
$score->n( 'en', 'E4' );
$score->n( 'en', 'Fs4' );
$score->n( 'en', 'G4' );
$score->n( 'dqn', 'A4' ) for 1 .. 5;
$score->n( 'dqn', 'B4' );
}
# 26
for ( 1 .. rand4() ) {
$score->n( 'en', 'E4' );
$score->n( 'en', 'Fs4' );
$score->n( 'en', 'G4' );
$score->n( 'en', 'A4' );
$score->n( 'dqn', 'B4' ) for 1 .. 5;
}
# 27
for ( 1 .. rand4() ) {
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'en', 'G4' );
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'sn', 'E4' );
}
# 28
for ( 1 .. rand4() ) {
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'sn', 'E4' );
$score->n( 'sn', 'Fs4' );
$score->n( 'den', 'E4' );
$score->n( 'sn', 'E4' );
}
# 29
for ( 1 .. rand4() ) {
$score->n( 'dhn', 'E4' );
$score->n( 'dhn', 'G4' );
$score->n( 'dhn', 'C5' );
}
# 30
for ( 1 .. rand4() ) {
$score->n( 'dwn', 'C5' );
}
# 31
for ( 1 .. rand4() ) {
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
}
# 32
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'F4' );
$score->n( 'dhn', 'F4' );
$score->n( 'dqn', 'G4' );
}
# 33
for ( 1 .. rand4() ) {
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'F4' );
$score->r('en');
}
# 34
for ( 1 .. rand4() ) {
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'F4' );
}
# 35
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
$score->r('en');
$score->r('qn') for 1 .. 3;
$score->n( 'qn', 'As4' );
$score->n( 'dhn', 'G5' );
$score->n( 'en', 'A5' );
$score->n( 'en', 'G5' );
$score->n( 'en', 'G5' );
$score->n( 'en', 'B5' );
$score->n( 'dqn', 'A5' );
$score->n( 'en', 'G5' );
$score->n( 'dhn', 'E5' );
$score->n( 'en', 'G5' );
$score->n( 'en', 'Fs5' );
$score->n( 'dhn', 'Fs5' );
$score->r('qn') for 1 .. 2;
$score->r('en');
$score->n( 'en', 'E5' );
$score->n( 'hn', 'E5' );
$score->n( 'dhn', 'F5' );
}
# 36
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
}
# 37
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
}
# 38
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
}
# 39
for ( 1 .. rand4() ) {
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'C5' );
}
# 40
for ( 1 .. rand4() ) {
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'F4' );
}
# 41
for ( 1 .. rand4() ) {
$score->n( 'sn', 'B4' );
$score->n( 'sn', 'G4' );
}
# 42
for ( 1 .. rand4() ) {
$score->n( 'wn', 'C5' );
$score->n( 'wn', 'B4' );
$score->n( 'wn', 'A4' );
$score->n( 'wn', 'C5' );
}
# 43
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F5' );
$score->n( 'sn', 'E5' );
$score->n( 'sn', 'F5' );
$score->n( 'sn', 'E5' );
$score->n( 'en', 'E5' );
$score->n( 'en', 'E5' );
$score->n( 'en', 'E5' );
$score->n( 'sn', 'F5' );
$score->n( 'sn', 'E5' );
}
# 44
for ( 1 .. rand4() ) {
$score->n( 'en', 'F5' );
$score->n( 'en', 'E5' );
$score->n( 'en', 'E5' );
$score->n( 'en', 'E5' );
$score->n( 'qn', 'C5' );
}
# 45
for ( 1 .. rand4() ) {
$score->n( 'qn', 'D5' );
$score->n( 'qn', 'D5' );
$score->n( 'qn', 'G4' );
}
# 46
for ( 1 .. rand4() ) {
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'D5' );
$score->n( 'sn', 'C5' );
$score->n( 'sn', 'D5' );
$score->r('en');
$score->n( 'en', 'G4' );
$score->r('en');
$score->n( 'en', 'G4' );
$score->r('en');
$score->n( 'en', 'G4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'D5' );
$score->n( 'sn', 'C5' );
$score->n( 'sn', 'D5' );
}
# 47
for ( 1 .. rand4() ) {
$score->n( 'sn', 'D5' );
$score->n( 'sn', 'C5' );
$score->n( 'en', 'D5' );
}
# 48
for ( 1 .. rand4() ) {
$score->n( 'dwn', 'G4' );
$score->n( 'wn', 'G4' );
$score->n( 'wn', 'F4' );
$score->n( 'qn', 'F4' );
}
# 49
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'As4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'As4' );
$score->n( 'sn', 'G4' );
}
# 50
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
}
# 51
for ( 1 .. rand4() ) {
$score->n( 'sn', 'F4' );
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'As4' );
}
# 52
for ( 1 .. rand4() ) {
$score->n( 'sn', 'G4' );
$score->n( 'sn', 'As4' );
}
# 53
for ( 1 .. rand4() ) {
$score->n( 'sn', 'As4' );
$score->n( 'sn', 'G4' );
}
}