Discover on Demand - Just like Spotify's Discover Weekly, but whenever you want.
Poweramp - Music Player for Android
Rocketgraph - Rocketgraph is an open-source drop in replacement to Firebase, except it's much better.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Spotify - Map shows when two people play same song at same time
Oto Music - Oto Music is an Android music player app that features Chromecast support, an equalizer, a ton of music controls, and functionalities.