1、FreePD:https://freepd.com
2、Free Music Archive:https://freemusicarchive.org/
3、 Incompetech:https://incompetech.com/music/royalty-free/music.html
4、Envato Market:https://audiojungle.net/
5、MUSOPEN:https://musopen.org/
6、Audioblocks:https://www.audioblocks.com/
7、ccMixter:http://ccmixter.org/
8、Jamendo:https://licensing.jamendo.com/en/royalty-free-music/project/advertising
9、Netlabels:https://archive.org/details/netlabels
10、 Audionautix:https://audionautix.com/