Library of Congress Classification of Music

These are some of the major divisions in the Library of Congress Classification of music.

M Music

• Collections
  • 1 General Collections
  • 2-2.3 Collections of Musical Sources by Two or More Composers
  • 3-3.1 Collected Works of Individual Composers
• Instrumental Music
  • 5 Collections
  • 6-175 Solo instruments
  • 177-990 Music for Two or More Solo Instruments
    • 180-298 Duets
    • 300-386 Trios
    • 400-486 Quartets
    • 500-586 Quintets
    • 600-686 Sextets
    • 700-786 Septets
    • 800-886 Octets
    • 900-986 Nonets
  • 990 Chamber Music for Instruments of the 18th Century and Earlier
  • 1000-1075 Orchestra
  • 1100-1160 String Orchestra
  • 1200-1270 Band
  • 1350-1353 Reduced Orchestra
  • 1356-1365 Dance Orchestras and Misc. Ensembles
  • 1366 Jazz Ensembles
  • 1375-1420 Instrumental Music for Children
  • 1450 Dance Music
  • 1470 Chance Compositions
  • 1473 Electronic Music
• Vocal Music
  • 1495 General Collections
  • 1497-1998 Secular Vocal Music
    • 1500-1527 Dramatic Music (Opera, Ballet, Etc.)
      • 1500 Opera and Musical Theater Full Scores
      • 1503 Opera and Musical Theater Vocal Scores
      • 1505-1508 Excerpts from Opera and Musical Theater
      • 1520-1526 Ballets
    • 1528-1529 Duets, trios, etc., for solo voices
    • 1530-1546 Choruses with orchestra or other ensemble
    • 1547-1600 Choruses, part-songs, etc., with acc. of keyboard, solo instrument or unacc.
    • 1611-1618 Songs for voice with orchestra or other ensemble
    • 1619-1621 Songs for voice with piano
      • 1619 Song collections of 2 or more composers
      • 1620 Song collections of 1 composer
      • 1621 Individual Songs
    • 1627-1853 Songs from Different Countries
      • 1627 Song collections
      • 1628-1677 United States
        • 1630 Popular Music
        • 1670-1671 Afro-American Songs
      • 1678-1679 Canada
      • 1730-1733 France
      • 1738-1739 British Isles
        • 1740-1741 England
        • 1744-1745 Ireland
        • 1746-1747 Scotland
    • 1950-1985 Song books
    • 1990-1998 Children's Vocal Music
  • 1999-2199 Sacred Vocal Music
    • 2000-2007 Oratorios
    • 2010-2014 Roman Catholic Masses
      • 2010-2011 Masses with ensemble acc.
      • 2013 Masses with keyboard acc.
    • 2020-2036 Choruses with Ensemble Acc.
      • 2020 Mixed Voices with Orchestra
      • 2021 Mixed Voices with Other Ensembles
      • 2023 Vocal Scores
    • 2060-2101 Choruses with Keyboard or Solo Instrument Acc., or A Cappella
      • 2065 Christmas Music
      • 2072 Mixed Voices with Keyboard
      • 2082 Collections for Mixed Voices a Cappella
      • 2092 Separate Works for Mixed Voices a Cappella
      • 2099-2100 Liturgical and Other Special Texts
    • 2102-2108 Songs Acc. by an Ensemble
    • 2110-2114 Songs with Keyboard Acc.
    • 2115-2146 Hymnals
    • 2147-2188 Liturgy and Ritual
    • 2198-2199 Gospel Songs

ML Music Literature

• 1-5 Periodicals
• 12-21 Directories, Almanacs
• 25-28 Societies
• 29-33 Foundations and Institutions
• 35-38 Festivals, Congresses
• 40-44 Programs
• 48-54 Librettos
• 55-60 Collected Essays
• 90 Writings of Musicians
• 93-97 Manuscripts and Facsimiles
• 100-109 Dictionaries, Encyclopedias
• 111-158 Bibliography
  • 113-118 International
  • 120 National
  • 132 Graded Lists, by Medium
  • 134 Catalogs of Composers' Works
  • 135 Manuscripts
  • 136-158 Catalogs
• 159-3797 History and Criticism
  • 162-197 Special Periods
    • 162-169 Ancient
    • 170-190 Medieval
    • 193-197 1600-
  • 198-350.5 By Region or Country
    • 198-239 America
    • 240-325 Europe
    • 330-345 Asia
    • 350-350.5 Africa
  • 385-429 Biography
    • 410 Individual Composers
  • 430-455 Composition
  • 460-1354 Instruments and Instrumental Music
  • 475-544 By Region or Country
    • 475-486 America
    • 489-522 Europe
    • 525-541 Asia
    • 544 Africa
  • 549-1092 Instruments
    • 550-649 Organ
    • 650-747 Piano, Harpsichord, etc.
    • 750-927 String Instruments
    • 930-990 Wind Instruments
    • 1000-1018 Plectgral Instruments
    • 1030-1040 Percussion Instruments
    • 1050-1055 Mechanical Instruments
    • 1100-1165 Chamber music
    • 1200-1270 Orchestral Music
    • 1300-1354 Band Music
  • 1400-3275 Vocal Music
    • 1500-1554 Choral Music
    • 1600-2881 Secular Vocal Music
    • 2900-3275 Sacred Vocal Music
  • 3300-3354 Program Music
  • 3400-3465 Dance Music
  • 3545-3775 National Music
  • 3790 Music Industry
  • 3800-3923 Philosophy and Physics of Music
    • 3830 Psychology
    • 3845-3877 Aesthetics
    • 3880-3923 Criticism
  • 3930 Literature on Music for Children

MT Music Theory

• 1 Periodicals
• 2-5 History and Criticism
• 6-7 Music Theory
• 20-32 Special Methods
• 40-67 Composition
  • 58-67 Forms
• 68 Improvisation, Accompaniment, Transposition
• 70-71 Orchestra and Orchestration
• 73 Band and Instrumentation for Band
• 90-145 Analytic Guides, Etc.
  • 95-100 Opera, Ballet, etc.
  • 110-115 Oratorios, Cantatas, etc.
  • 125-130 Orchestral Music
  • 140-145 Chamber music for Organ, Piano, Violin, etc.
• 150 Guides
• 170-810 Instrumental Techniques
  • 180-198 Organ
    • 192-192.8 Electronic Keyboard Instruments
  • 200-208 Harmonium
  • 220-255 Piano
  • 259-338 String Instruments
    • 260-279 Violin
    • 280-298 Viola
    • 300-318 Violoncello
    • 320-334 Double Bass
  • 339-538 Wind Instruments
    • 340-359 Flute
    • 360-376 Oboe
    • 380-388 Clarinet
    • 400-408 Bassoon
    • 418 Brass Instruments
  • 539-654 Plectral Instruments
    • 580-599 Guitar
  • 655-722 Percussion and Other Instruments
  • 728 Chamber Music Instruction and Study
  • 730 Orchestral Instruction and Study
  • 733-733.6 Band Instruction and Study
  • 740-810 Instruction and Study for children
• 820-949 Singing and Voice Instruction
  • 825-850 Systems and Methods
  • 855-883 Special Techniques
  • 885-893 Studies and Exercises
  • 898-949 Techniques for Children
• 950-960 Ballet, Opera, Music in Theaters and Production