Library of Congress
Classification for Music (M)

Call number	Classification
M2 - M2.3	Sources, Reprints, Monuments of Music (Collections of musical scores)
M3 - M3.3	Collected works of individual composers
M5 - M175 M5 M6 - M19 M20 - M39.6 M40 - M59.5 M60 - M111 M115 - M142 M145 - M175	Solo instrumental music Collections containing music for a variety of instruments. Organ music Piano music Bowed stringed instruments Wind instruments Plucked stringed instruments (harp, guitar, etc.) Percussion and other instruments (bagpipe, accordion, etc.)
M200 - M990 M200 - M298 M300 - M386 M400 - M886 M900 - M986 M990	Chamber music Duos Trios Quartets - Octets Nonets & larger chamber ensembles Early chamber music (18th century and before)
M1000 - M 1366	Music for large instrumental ensembles (Orchestra, band, etc.)
M1375 - M1450	Instrumental music for children
M1470	Aleatory music
M1473	Electronic music
M1495 - M2199 M1500 - M1527 M1528 - M1529 M1530 - M1609 M1611 - M1626 M1627 - M1978 M1985 - M1998 M1999 - M2101 M2102 - M2115 M2115 - M2146 M2147 - M2188	Vocal music Dramatic music Vocal duets, trios, etc. Choral music Solo songs National songs and songs on particular topics Songs for children Sacred choral music Sacred solo songs Hymnals Liturgical and ritual music
ML	Literature on music Including bibliography, libretti, biography, history, research, philosophy
MT	Music instruction and study Including composition, analysis

For information on non-music subjects within the Library of Congress Classification, see http://www.loc.gov/catdir/cpso/lcco/lcco.html.