音楽系APIの一覧 - QiitaWorld Wide Echo Nest http://developer.echonest.com/ Gracenote https://developer.gracenote.com/ja/web-api YouTube https://developers.google.com/youtube/js_api_reference SoundCloud https://developers.soundcloud.com/docs Last.fm http://www.lastfm.jp/api Rdio Can't access the dev page from Japan http://www.rdio.com/developers/ iTunes Search API http://www.apple.com/itunes/affiliates/resources/document
