Be careful, search engines now list free music donwload webistes that are fake, with tons of ads and virus, check well before downloading anything!
I know that many youtube users had to find royalty free, free downloads, so their videos are not removed, you may try to search in relation to that?
Probably you won't find many, if you find something, don't hesitate to post here.
I believe pages with links to .mp3 files are now censored, without any prior checking about rights or anything. Friends had published the first words of their little kid, and just after that, their webpage suddenly disappeared from all search engines.
Worst: I downloaded songs from a military choir website. They offered their own songs for free, but the next time I came to their site, their webhosting provider had blocked all access, citing some infringement to the law... yet they only published their own creations and ancient military marches!