A Cantus Firmus written in Lillypond

BabbysFirstCantusFirmus

\version "2.12.0"  

\header{
  title = "Babby's First Cantus Firmus"
  subtitle = "A Cantus Firmus written in Lillypond"
}


% Rules for Writing a Cantus Firmus
% 1. The cantus must be between eight and sixteen notes in length, all of the
%   same rhythmic value, and should generally be in the shape of an arch.
% 2. The cantus must begin and end on the tonic, and the final tone must be
%   approached by step from above.
% 3. The cantus must be entirely diatonic (i. e. it must not use any
%   accidentals), and must not move by augmented intervals, 7ths, or
%   intervals larger than an octave (Ex. 1). Diminished melodic intervals
%   may be used if the melody changes direction by step immediately
%   afterward (Ex. 2).
% 4. All counterpoints must contain a climax (high point), and this climax
%   should not be repeated.
% 5. The counterpoint should mainly move by step, but should have a few
%   leaps (Exx. 3 and 4). Leaps larger than a 4th should change the direction
%   of the line, and should be followed by a change of direction (Ex. 5).
% 6. Avoid excessive motion in one direction, especially with leaps (Ex. 6).
%   More than two consecutive leaps are not allowed. Two consecutive
%   leaps in the same direction must outline a triad.
% 7. Avoid redundancy resulting from repeated notes, from the repetition of a
%   distinctive group of tones, or from sequences.
% 8. A tenth between the lowest and highest tones of a cantus is the maximum
%   possible range. Most good ones have a range of about a fifth or sixth.
 
 

\score {
	\new Staff {
		\clef alto \time 4/4 \key g \major{	
			g2 a2
			b2 a2
			c2 b2
			a2 g2
		}
	} 
}

I prefer to compile this using WebLily.net, that is the reasoning behind using a deprecated version for the LilyPond compiler.