Songlio - Free musical guessing game: race friends to name that tune
Poolside FM - Experiment a radio made on Internet times.
Rock On! - A song pop adventure - music trivia awesomeness
Noted - Social music discovery
SongTrivia2.io - Songtrivia2.io is a browser and mobile blind test game that allows you to play in real time with your friends or against strangers. Several musical themes, difficulty and game modes are available to create lots of different musical quizzes.
humit - A social networking app for music sharing and discovery.