Drawasaurus - Drawasaurus is an online drawing & guessing game you can play with friends or strangers.
Songlio - Free musical guessing game: race friends to name that tune
skribbl - Word guessing based on drawing.
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.
gartic.io - Draw, guess, and win!
Rock On! - A song pop adventure - music trivia awesomeness