Re: "Generative music" and "Algorithmic composition"

[Paul Morris]

Philip Rhoades wrote
> It occurred to me that the next step would be to generate something that
> is a little more melodic or musical 

One simple thing you can do is to only work with the notes from one key at a
time.  And I think this makes sense in terms of learning as well as sounding
more musical.  (Unless you aspire to play only atonal music...)  

The following modifies David's snippet so it only selects notes from the key
of C major (and extends the range to two octaves), then you can use
\transpose to change to a different key when you are ready to move on to
another key. 

\version "2.18.0"

randomNotes =
{
  $@(let ((notes (ly:music-property #{ <e f g a b c' d' e' f' g' a' b' c'
d'> #}
                                    'elements)))
      (map (lambda (x) (list-ref notes (random (length notes)))) (iota
400)))
}

\new Voice {
  \transpose c c {
    \randomNotes
  }
}


FWIW, I think using something like this to practice guitar (especially at a
beginner level) would be more effective if you didn't play it straight
through, but repeated each measure several times (maybe 8?) before moving on
to the next one.  That repetition will be more helpful for learning than
constantly giving your fingers/mind something new to figure out.  As you
progress you can reduce the number of repetitions until you're playing it
straight through.

Cheers,
-Paul



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