Songlio - Free musical guessing game: race friends to name that tune
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
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.
keezy - A colorful soundboard. Play with music.
Rock On! - A song pop adventure - music trivia awesomeness
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.