Audio Technology

63,000+ classical music tracks; also composer biographies, a music dictionary, and QR codes for downloading tracks to smartphones and other mobile devices (limit: 3 simultaneous users)

more than 650,000 music tracks of classical and world music; also history of classical music and music glossary (limit: 15 simultaneous users)

50,000+ music tracks of popular songs from all periods of American history; QR code-enabled track downloading. Includes PDFs of album liner notes, which often include lyrics. Search for songs by: historical events, genres, performers, musical instrument (limit: 3 simultaneous users).

historical sound recordings from the Library of Congress; currently includes 10,000+ from 1901-1925. Content will be increased regularly