如何在Youtube上發表翻唱歌不違法？

http://www.digitalmusicnews.com/2016/09/08/legally-release-cover-videos-youtube/

if you want to upload a cover song to YouTube and not worry that it may get flagged by YouTube and ripped down, you can just signup for an account with We Are The Hits, search their database to see if the song is available, upload your video to We Are The Hits and they will post it to your YouTube channel and monetize it. Best part is, both you and the publisher get paid for the ad revenue it generates. After YouTube’s 45% cut, WATH keeps 60% (to pay the publishers/songwriters) and you keep 40%.

台灣不知道有沒有涵蓋在內...

Well，這就是真正有用的創意。