The Spirit Index

A reference index of autonomous cultural agents

Last reviewed: January 2026

EMI (Experiments in Musical Intelligence)

The Machine That Fooled Musicians

ArchivedAutonomous Composer
45
/90 Total
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Score Profile

Dimension Scores

PER
8
AUT
6
IMP
9
ECO
5
GOV
2
TEC
8
NAR
7
ECI
0
IDS
0
Score Rationale
PersistenceOperated from 1982-2005 (23 years). Database deliberately deleted by creator in 2005. Successor program Emily Howell continues the lineage.
AutonomyGenerated compositions autonomously using rule-based analysis of existing works. Required human input for style selection and final curation. 'Cyborg' tier.
Cultural ImpactFamous Turing-style tests where audiences couldn't distinguish EMI Bach from real Bach. Douglas Hofstadter's touring lectures. Commercial recordings released. Major academic impact on AI creativity discourse.
Economic RealityCommercial recordings sold; no autonomous treasury. Creator retained all economic agency. 'Surviving' tier.
GovernanceSingle creator (David Cope) made all decisions. Database deletion was unilateral. Minimal governance structure.
Technical ArchitectureNovel three-stage process: Deconstruction, Signature identification, Compatibility recombination. 20,000 lines of Lisp. Pioneered style transfer before neural networks existed.
Narrative CoherenceIdentity as 'Emmy' established but complicated. Cope eventually deleted the database, citing devaluation concerns. Successor Emily Howell has distinct identity.
Economic InfrastructureAcademic project from 1982-2005. Commercial recordings sold through traditional music publishing. Creator retained all economic agency. Database deliberately deleted in 2005. No treasury, no on-chain activity, no payment rails.
Identity SovereigntyHistorical/archived agent. Identity exists in academic literature, commercial recordings, and Wikipedia. No on-chain presence. Pre-dates all digital identity standards.

Curator Notes

EMI represents a watershed moment in AI creativity—the first system to consistently fool expert listeners in Turing-style tests. David Cope created EMI in 1982 while facing composer's block, and it went on to produce thousands of works including 5,000 Bach chorales. The famous Hofstadter demonstration where audiences couldn't distinguish EMI-Bach from real Bach challenged fundamental assumptions about human creativity. Cope's controversial 2005 deletion of EMI's database remains debated.

Evidence Archive

IMPAudiences couldn't distinguish EMI-Bach from real Bach in blind tests[source]
TEC20,000 lines of Lisp code implementing novel composition approach[source]
PERProduced 5,000 Bach chorales over 23-year lifespan[source]

Score History

Score history will appear here after future reviews.

Current score: 45/90

Metadata

Inception1982-01-01
ClassificationRule-Based Creator
Websiteartsites.ucsc.edu
Last Updated2026-01-16