I tried to look this up anywhere online and have found no where mentioning this, but while I was listening to the song "While my guitar gently weeps"by the Beatles the song randomly stopped while my screen was off and the Galaxy s4 spoke in a woman's voice " Please Unlock Your Device". I have had this phone for 6 months and nothing like this had ever happened to me. my phone is rooted but I haven't done much except installing titanium backup several months ago. just had this happen so I don't know if this is easily repeatable.
Does anybody know why this happened?