// A much fucking simpler approach to generating musical patterns.
// The state of an iteration is a byte, interpreted as a base-4 number
// with 4 digits.  Each digit indexes one level of indirection.

typedef unsigned char note_val, position;
enum { width = 8, width_mask = width - 1 };
typedef unsigned char score[4][width][4];

void generate_score(score *sc);
note_val next_note(position pos, score *sc, int track);
int freq(note_val n);
void mutate_score(score *sc);