So I havent used Shake to Shuffle in years, but when I did I remember being able to do it outside the music app, at the lock screen, etc. I tried it today on my iPhone 6 IOS 8, Nothing. Is this a on purpose, a restriction of the feature, or a bug? I cant see why there would be a restriction. The whole concept is to change the song with less effort, but I have to unlock and go into the music app to use it!? Anyone use this feature all the time that could explain whats going on?