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AI Composing: Reviving Classical Styles

EMI is a computer program created by David Cope to compose new musical works in the styles of famous composers by analyzing their existing works. It parses compositions into lexicons and uses augmented transition networks to generate new "musical sentences". EMI can compose entire pieces that have been mistaken for the original composers by experts and have been performed live. The program aims to emulate signature styles so convincingly that its outputs are indistinguishable from the works of composers like Bach and Mozart.

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152 views11 pages

AI Composing: Reviving Classical Styles

EMI is a computer program created by David Cope to compose new musical works in the styles of famous composers by analyzing their existing works. It parses compositions into lexicons and uses augmented transition networks to generate new "musical sentences". EMI can compose entire pieces that have been mistaken for the original composers by experts and have been performed live. The program aims to emulate signature styles so convincingly that its outputs are indistinguishable from the works of composers like Bach and Mozart.

Uploaded by

nicolas
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PPT, PDF, TXT or read online on Scribd
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EMI: Experiments in

Musical Intelligence
One man’s dream to create new
works from the composers who are
decomposing
What is EMI?
• 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
• 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?

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