Music firm We Are Hunted is ramping up its app development business fast, releasing its third music discovery app this weekend, following previous apps Pocket Hipster and Music Hunter. The new app, which is free, is called SuperSonic. Like the others, it taps into APIs from The Echo Nest and 7digital with the aim of helping people find new artists that they might like. In this case, the recommendations are based on their existing music collections. “Select an artist from your iTunes library and SuperSonic suggests other artists you might like. You can listen to a sample of a song by each artist, then save your favorites and buy them on iTunes,” explains the App Store listing. Suggestions can be refined based on tempo, popularity and energy – Echo Nest’s famous `danceability’ metric. Source: Music Ally Blog