The Alpha-Numeric System for Classification of Recordings (ANSCR) is composed of categories into which all sound recordings are organized. This system is used by the Audio/Video Department at the Main Library, Arlington Branch and the Bookmobile.

A  History of International Music
B  Operas
C  Choral Music
D  Vocal Music
EA  Orchestral music: General Orchestral
EB  Orchestral music: Ballet Music
EC  Orchestral music: Concertos
ES  Orchestral music: Symphonies
F    Chamber Music
GG  Guitar
GO  Organ
GP   Piano
GS   Stringed Instruments
GV   Violin
GW  Wind Instruments
GX   Percussion and Marching Bands
H    Halloween and other Holidays
J     Techno Music
K    Broadway  Soundtracks 
L     Soundtracks from Movies and TV
MA   Easy Listening
MB  The Blues
MC   Country/Western
MG   Contemporary Christian/Gospel
MH  History of American Music
MJ    Jazz
ML  Latin Music
MN  New Age
MR   Rock and Rap
P   Folk and Ethnic Music (U.S.)
Q   Folk and Ethnic Music (International)
R   Christmas Music
V   Audio Books--General Fiction
VF  Audio Books--Fantasy
VI   Audio Books--Inspirational
VM   Audio Books--Mystery
VR   Audio Books--Romance
VS   Audio Books-Science Fiction
VW   Audio Books--Western
(NOTE: Nonfiction Audio Books are in Dewey Order)
W  Wedding Music
ZI     Children's Recordings: Instructional
ZM   Children's Recordings: Music
ZR   Children's Christmas
ZS   Children's Recordings: Spoken