Spotify - Map shows when two people play same song at same time
Poweramp - Music Player for Android
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Musicolet - Musicolet is a small yet feature-rich offline Music Player for Android.
Magic Playlist - Get the playlist of your dreams based on a song
AIMP - AIMP : Free Audio Player : Официальный сайт программы