(and rejected)
the following representations
for music on the Tree of Life:
kilohertz-level micro-stripes
(impossible to eyeball)
abstract-colorshape animations
(not mathematical enough)
midi performance-encoding
(too instrument-dependent)
pandora musicological analysis
(not descriptive enough of moods)
another domain
that faces a similar problem
is 'scoring' videogames
where a scene may be of any length
and of any, varying mood
and where too-repetitive music
will be a huge turnoff
so the grail, here
is flexible music synthesis
that might begin from pandora-style variables
mapped onto game-plot-complications:
how should the rhythms and harmonies change
when a room is cleared of enemies?
when it's apparently cleared?
when you open a door? or a crate?
our virtual accompanists
on the Tree of Life
start from a broader version
of the same questions
as if the videogame of life
has gradually added more and more
plot complications
requiring more and more
musical subtleties
evolving up the Tree of Life