RILM’s comprehensive Classification System which groups 99 classes under 16 super classes.
Super Classes
- Reference and Research Materials
 - Imaginative Literature
 - Collected Writings
 - Universal Perspectives
 - Western Art Music
 - Traditional Music and Non-Western Art Music
 - Jazz and Blues
 - Popular Music
 - Sound Sources
 - Sound Art and New Media
 - Performance Practice and Notation
 - Theory, Analysis, and Composition
 - Pedagogy
 - Music and Other Arts
 - Music and Related Disciplines
 - Music in Liturgy and Ritual
 
Reference and Research Materials
- 1 Bibliography and librarianship
 - 2 Libraries, museums, collections
 - 3 Encyclopedias and dictionaries
 - 4 Catalogues (library, museum, or exhibition)
 - 5 Catalogues, thematic
 - 6 Bibliographies, general
 - 7 Bibliographies, music
 - 8 Bibliographies, music literature
 - 9 Discographies and filmographies
 - 10 Iconographies
 - 11 Chronologies and almanacs
 - 12 Directories and membership lists
 
Imaginative literature
- 13 Imaginative literature (includes film)
 
Collected Writings
- 14 Periodicals and yearbooks
 - 15 Festschriften
- 15.0 Festschriften (general items)
 - 15.1 Individuals15.2 Choral societies
 - 15.3 Instrumental ensembles
 - 15.4 Music associations, composers’ societies, Musikvereine
 - 15.5 Academic institutions, libraries
 - 15.6 Festivals, exhibitions, congresses
 - 15.7 Theaters and opera ensembles
 - 15.8 Publishers and printers, music stores, record labels, journals, newspapers
 - 15.9 Instrument manufacturers
 - 15.10 Non-music secular and religious institutions; countries, cities, monasteries
 
 - 16 Congress reports, symposium proceedings
 - 17 Essays and documents
 
Universal Perspectives
- 19 Universal Perspectives, general (historical/ethnographical)
 
Western Art Music
- 20 The discipline
 - 21 History, general
 - 22 Antiquity
 - 23 Middle Ages
 - 24 Renaissance
 - 25 Baroque
 - 26 Classic
 - 27 Romantic and post-Romantic
 - 28 Twentieth and 21st century (history)
 - 29 Twentieth and 21st century (musical life)
 
Traditional Music and Non-Western Art Music
- 30 Ethnomusicology, the discipline
 - 31 General
 - 32 Africa
 - 33 Asia. General
- 33.1 Asia. Traditional music
 - 33.2 Asia. History of music
 
 - 34 Europe
 - 35 North America (North of Mexico)
 - 36 South and Central America, Mexico, and the Caribbean
 - 37 Oceania, Australia, New Zealand
 
Jazz and Blues
- 38 Jazz and Blues
 
Popular Music
- 39 Popular Music
- 39.0 General
 - 39.2 Africa (general)
- 39.21 North Africa
 - 39.22 Sub-Saharan Africa
 
 - 39.3 Asia
- 39.31 East Asia (includes Mongolia and Sibir’)
 - 39.32 South Asia
 - 39.33 Southeast Asia
 
 - 39.4 Europe
 - 39.5 North America (north of Mexico)
 - 39.6 Mexico, Caribbean, Central America, South America
 - 39.7 Australia, New Zealand, Oceania
 
 
Sound Sources
- 40 General (including conducting, organology)
- 40.0 Sound sources (general)
 - 40.1 Organology as discipline
 - 40.2 Conducting
 - 40.3 Orchestra
 
 - 41 Voice (including choral ensembles)
- 41.0 General
 - 41.2 Africa (general)
- 41.21 North Africa
 - 41.22 Sub-Saharan Africa
 
 - 41.3 Asia
- 41.31 East Asia (includes Mongolia and Sibir’)
 - 41.32 South Asia
 - 41.33 Southeast Asia
 
 - 41.4 Europe
 - 41.5 North America (north of Mexico)
 - 41.6 Mexico, Caribbean, Central America, South America
 - 41.7 Australia, New Zealand, Oceania
 
 - 42 Keyboard, organ
 - 43 Keyboard, general
 - 44 String (chordophones)
- 44.0 General
 - 44.2 Africa (general)
- 44.21 North Africa
 - 44.22 Sub-Saharan Africa
 
 - 44.3 Asia
- 44.31 East Asia (includes Mongolia and Sibir’)
 - 44.32 South Asia
 - 44.33 Southeast Asia
 
 - 44.4 Europe
 - 44.5 North America (north of Mexico)
 - 44.6 Mexico, Caribbean, Central America, South America
 - 44.7 Australia, New Zealand, Oceania
 
 - 45 Wind (aerophones)
- 45.0 General
 - 45.2 Africa (general)
- 45.21 North Africa
 - 45.22 Sub-Saharan Africa
 
 - 45.3 Asia
- 45.31 East Asia (includes Mongolia and Sibir’)
 - 45.32 South Asia
 - 45.33 Southeast Asia
 
 - 45.4 Europe
 - 45.5 North America (north of Mexico)
 - 45.6 Mexico, Caribbean, Central America, South America
 - 45.7 Australia, New Zealand, Oceania
 
 - 46 Percussion (membranophones, idiophones)
- 46.0 General
 - 46.2 Africa (general)
- 46.21 North Africa
 - 46.22 Sub-Saharan Africa
 
 - 46.3 Asia
- 46.31 East Asia (includes Mongolia and Sibir’)
 - 46.32 South Asia
 - 46.33 Southeast Asia
 
 - 46.4 Europe
 - 46.5 North America (north of Mexico)
 - 46.6 Mexico, Caribbean, Central America, South America
 - 46.7 Australia, New Zealand, Oceania
 
 - 47 Mechanical
 - 48 Electrophones (synthesized sound)
 
Sound Art and New Media
- 49.1 Sound art
 - 49.2 Digital and multimedia art
 
Performance Practice, Notation, and Editing
- 50 Performance practice, general
 - 51 Performance practice, to ca. 1600
 - 52 Performance practice, ca. 1600-1825
 - 53 Performance practice, ca. 1800-1900
 - 54 Performance practice, 20th & 21st centuries
 - 55 Notation and paleography
 - 56 Improvisation
 - 58 Editing
 
Theory, Analysis, and Composition
- 60 Theory, general
 - 61 Rhythm, meter, tempo
 - 62 Tuning, temperament, scale structures
 - 63 Harmony, counterpoint, voice-leading (tonal and nontonal)
 - 64 Form and genre
 - 65 Sound color, texture, register
 - 66 Style analysis
 - 67 Structural analysis
 - 68 Computer and electronic composition
 - 69 Melody and motive
 
Pedagogy
- 70 General
 - 71 Preschool, primary, and secondary schools
 - 72 Colleges and universities
 - 73 Conservatories and other professional training
 - 74 Music education for amateurs
 
Music and the Other Arts
- 75 General
 - 76 Dance
- 76.0 General
 - 76.1 Dance studies as discipline
- 76.21 Ballet
 - 76.29 All post-ballet developments (parallel to classes 28 & 29)
 - 76.30 Social dance, general
 
- 76.32 Social dance, Africa
 - 76.33 Social dance, Asia
 - 76.34 Social dance, Europe
 - 76.35 Social dance, North America (north of Mexico)
 - 76.36 Social dance, Mexico, Caribbean, Central America, South America
 - 76.37 Social dance, Australia, New Zealand, Oceania
 - 76.38 Jazz and musical theater
 - 76.39 Popular stage dance & music video
 - 76.40 Traditional theatrical dance, general
 
- 76.42 Traditional theatrical dance, Africa
 - 76.43 Traditional theatrical dance, Asia
 - 76.44 Traditional theatrical dance, Europe
 - 76.45 Traditional theatrical dance, North America (north of Mexico)
 - 76.46 Traditional theatrical dance, Mexico, Caribbean, Central America, South America
 - 76.47 Traditional theatrical dance, Australia, New Zealand, Oceania
 
 
 - 77 Dramatic arts
- 77.0 General
 - 77.1 Theater studies as discipline
- 77.11 Opera
 - 77.12 Popular musical theater
 - 77.13 Libretto
 - 77.14 Film and television
 - 77.15 Music video
 - 77.16 Multimedia theater
 - 77.17 Incidental music
 - 77.18 Set designing, staging, directing
 - 77.30 Traditional dramatic arts, general
 - 77.32 Traditional dramatic arts, Africa
 - 77.33 Traditional dramatic arts, Asia
 - 77.34 Traditional dramatic arts, Europe
 - 77.35 Traditional dramatic arts, North America (north of Mexico)
 - 77.36 Traditional dramatic arts, Mexico, Caribbean, Central America, South American
 - 77.37 Traditional dramatic arts, Australia, New Zealand, Oceania
 
 
 - 78 Literature
- 78.0 General
 - 78.1 Literature studies as discipline
 - 78.2 Song texts
- 78.31 Traditional literature & epics, general
 - 78.32 Traditional literature & epics, Africa
 - 78.33 Traditional literature & epics, Asia
 - 78.34 Traditional literature & epics, Europe
 - 78.35 Traditional literature & epics, North America (north of Mexico)
 - 78.36 Traditional literature & epics, Mexico, Caribbean, Central America, South America
 - 78.37 Traditional literature & epics, Australia, New Zealand, Oceania
 
 
 - 79 Visual arts (including iconography)
 
Music and Related Disciplines
- 80 General
 - 81 Philosophy, aesthetics, criticism
 - 82 Psychology and hearing
 - 83 Physiology, therapy, medicine
 - 84 Archaeology
 - 85 Engineering and sound recording; computers
 - 86 Physics, mathematics, acoustics, architecture
 - 87 Social sciences
- 87.1 Sociology and cultural Studies
 - 87.2 Anthropology and ethnology
 - 87.3 Economics
 - 87.4 Politics and political Science
 - 87.5 Sound studies
 - 87.6 Cultural geography
 - 87.7 Gender and sexuality studies
 - 87.8 Ethnic and racial studies
 - 87.9 Media studies and popular culture studies
 
 - 88 Linguistics and semiotics
 - 89 Printing, publishing, music business
- 89.0 General
 - 89.1 Printing
 - 89.2 Music industry
 - 89.3 Law
 
 
Music in Liturgy and Ritual
- 90 Religion, general
- 90.0 General
 - 90.1 Liturgical studies as discipline
 - 90.2 Christianity, general
 
 - 91 Jewish
 - 92 Byzantine and Eastern Orthodox
 - 93 Roman Catholic
 - 94 Protestant
- 94.0 General
 - 94.1 Lutheran group
 - 94.2 Calvinist group
 - 94.3 Anabaptist group
 - 94.4 Anglican/Episcopal group
 - 94.5 Baptist group
 - 94.6 Methodist group
 - 94.7 Pentecostal group
 - 94.8 Adventist group
 
 - 95 Buddhist
 - 96 Hindu
 - 97 Islamic
 - 99 Other
- 99.1 General
 - 99.2 Africa
 - 99.3 Asia (includes Central Asia)
- 99.31 East Asia (includes Mongolia and Sibir’)
 - 99.32 South Asia
 - 99.33 Southeast Asia
 
 - 99.5 North America (north of Mexico)
 - 99.6 Mexico, Caribbean, Central America, South America
 - 99.7 Australia, New Zealand, Oceania