NYPL Digital Collections--On January The New York Public Library enhanced access to all public domain items in Digital Collections so that everyone has the freedom to enjoy and reuse these materials in almost limitless ways.
An archive of audio formerly on Public Domain Sounds
incompetech – Custom Production Music and also Graph Paper: Incompetech: Royalty-Free Music Full Search. This is the normal default search, and can access every piece in the catalog. You can narrow your search on genre, feel, tempo, or len.
metropolitan museum of art open access public domain creative commons