Download EMI: Experiments in Musical Intelligence

EMI: Experiments in
Musical Intelligence
One man’s dream to create new
works from the composers who are
decomposing
What is EMI?
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Written by David Cope
Originally a fix for “composer’s block”
Became a tool for composing entire works
Writes works that emulate styles of various
composers
Central Challenges
• Creating a grammar that holds all of the
basic rules for coherent music
• Using previous works to bring life into the
music
• Passing off new works as written by the
“original” composer
Music as seen by EMI
Implementation of EMI
• Parses existing musical examples into a
complex catalog of lexicons
• Augmented Transition Networks provide a
way of linking lexicons of words into
meaningful musical sentences
SPEAC Identifiers
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Statement - declaration of material
Preparation - introductory gesture
Extension - continuance of material or ideas
Antecedent - active function
Consequent – conclusive, paired with
antecedent
SPEAC Analysis of Bach Chorale
Nested Musical Phrases
• Musical phrase analysis on multiple levels
Extracting the Essence
• Finding a composer’s signature and using it
in the new works
• Two Mozart piano sonata excerpts:
Success of EMI
• Styles are always recognizable
• “EMI’s Mozart is better than 99 percent of
non-Mozart classical music.” - Cope
• Performers can often feel the depth,
richness, and emotion in EMI’s works
• Tested before experts at Eastman
• Live performance of Mozart’s 42nd
The End – Any Questions?