if you see the video , that shows how to play the famous song named Careless Whisper with this app In the setting menu you are able mix the sounds and change the track volumes People who have seen hour other apps before will download this app without any doubt. if you don't believe it just see the app video . you think the video is fake ? OK download it and see with your eyes its free to download ! too see the app performance you can watch this video: https://www.youtube.com/watch?v=Us2D2R_kFno