| Call no. range | Subject | Level | Comments | ||
| ML 1 | Periodicals, U.S. | 3b | Includes print & online | ||
| ML 4 | Periodicals before 1800 | 1 | Online only | ||
| ML 5 | Periodicals, foreign after 1800 | 3b | Includes print & online | ||
| ML 12-21 | Directories | 2 | |||
| ML 25-28 | Publications of societies | 3 | |||
| ML 29-31 | Music foundations | 2 | |||
| ML 32-38 | Publications of institutions & festivals | 1 | |||
| ML 40-46 | Programs, advertisements, scrap books | 0 | |||
| ML 47-54 | Librettos | 3b | |||
| ML 55-60 | Collected literary works | 3a | |||
| ML 62-85 | Special topics | 3a | |||
| ML 86-89 | Musical ironography | 2 | |||
| ML 90 | Writings of musicians | 3a | |||
| ML 93-96 | Musical paleography | 1 | |||
| ML96.4-96.5 | Facsimiles | 2 | |||
| ML 97 | Catalogs of Collectors, dealers, etc | 0 | |||
| ML 100-109 | Dictionaries, encyclopedias | 3b | |||
| ML 111-134 | Music bibliography | 4 | |||
| ML 135-155 | Catalogs | ||||
| ML 156-158 | Discography | 3a | |||
| ML 159 | History before 1800 | 3b | |||
| ML 160-161 | History after 1800 | 3b | |||
| ML 162-169 | Antiquity, history & criticism | 2 | |||
| ML 170-190 | Medieval, Renaissance, hist & crit. | 3b | |||
| ML 193 | General historical works | 2 | |||
| ML 194 | Seventeenth-century music; hist & crit. | 3b | |||
| ML 195 | Eighteenth-century music; hist & crit. | 3b | |||
| ML 196 | Nineteenth-century music; hist & crit. | 3b | |||
| ML 197 | Twentieth-century music; history & criticism | 3b | |||
| ML 198-239 | American music; hist & crit. (includes Canada, Lat. Am. | 3b for U.S., 3a for others | |||
| ML 246-325 | Europe-hist. & crit. | 3b | |||
| ML 330-345 | Asia- hist. & crit. | 3a | |||
| ML 350 | Africa, hist. & crit. | 3a | |||
| ML 360 | Australia | 2 | |||
| ML 385-429 | Biographies | 3b | ML 410 composer biogs at 4 | ||
| ML 430-455 | Composition | 3a | |||
| ML 457 | Conducting | 3a | |||
| ML 459 | Periodicals; societies; serials | 2 | Most in ML 1, ML 5 | ||
| ML 460-1092 | Musical Instruments | 3a | Piano, strings at 3b | ||
| ML 1100-1165 | Chamber music | 3a | |||
| ML 1200-1270 | Orchestral music | 3b | |||
| ML 1300-1354 | Band music | 3a | |||
| ML 1400-1460 | Vocal music | 3b | |||
| ML 1500-1554 | Choral music | 3b | |||
| ML 1600-2881 | Secular vocal music | 3a | |||
| ML 2900-3275 | Sacred vocal music | 3a | |||
| ML 3000-3465 | Program music | 2 | |||
| ML 3469-3537 | Popular music | 3a | |||
| ML 3545 | National music (general) | 2 | |||
| ML 3549 | America (general) | 2 | |||
| ML 3550-3563 | US & Canada | 3a | |||
| ML 3565-3575 | Latin America | 2b | |||
| ML 3580-3730 | Europe | 2b | |||
| ML 3740-3758 | Asia | 2 | |||
| ML 3760 | Africa | 2 | |||
| ML 3770-3775 | Oceania, Australia | 1 | |||
| ML 3776 | Jewish music | 2 Much is under specific composers | |||
| ML 3780 | Trade, labor, sea, hunting songs | 1 | |||
| ML 3785 | Music journalism | 2 | |||
| ML 3790 | Musical life | 2 | |||
| ML 3797 | Musicology | 3a | |||
| ML 3798-3799 | Ethnomusicology | 3a | |||
| ML 3800-3923 | Philosophy & physics of music | 2 | Music therapy at (ML 3919-3923) 3a | ||
| ML 3930 | Literature on music for children | 2 | |||
| MT 1 | Theory of musical instruction & study | 3b | |||
| MT 2-5 | History & criticism | 3b | |||
| MT 6-18 | Music theory | 3b | |||
| MT 20-34 | Special methods of instruction & study | 2b | |||
| MT 35-38 | Notation, dictation, ear training | 3a | |||
| MT 40-67 | Composition | 3b | |||
| MT 68 | Improvisation | 2 | |||
| MT 70-84 | Orchestration | 3b | |||
| MT 85-89 | Conducting, organization of groups | 3b | |||
| MT 90-155 | Analysis, appreciation | 3a | |||
| MT 165 | Tuning | 2 | |||
| MT 170-810 | Instrumental techniques | 2-3a | Strings, woods, keyboard 3a; Guitar, etc. 2; see also Music score policy | ||
| MT 820-893 | Singing and voice culture | 3a | See also music score policy. | ||
| MT 898-949 | Techniques for children | 2 | |||
| MT 950 | Music for ballet and dance instruction | 0 | |||