CS 342 Lecture -*- Outline -*-

* course project

** predicates from Springer & Friedman
	see Scheme and Art of Programming, chapter 8

** 4-part voice leading

	input: initial chord and base line
		chord = list of 4 notes (in order: s a t b)
			such that for each x in {s a t},
				x = b + p + k*7
					where p in {0,2,4}
					and k is an integer
				and s > a > t > b
		note = a (non-negative) integer (1 is tonic, 8 is octave above)
		bass line = list of notes

	outout: list of chords such that
		the bass note of the ith output chord is the ith note of the
			bass line
		the first chord of the output is the initial chord of the input
		and the following rules are satisfied: priority order
		1. notes are repeated if posisble in all voices
		2. each voice moves to closest note from previous chord
		3. if tie, move in direction opposite to bass