The widely-used music app Spotify has recently added a 'Discover' component that recommends music for the user depending on the users current music habits.
Who you listen to, playlists you've made, favorite artists, most played songs and who you follow are all factors that the 'Discover' feature uses to determine other artists you might like to listen to. Through monitoring and curating a user's music habits, 'Discover' creates a page filled with likely music match-ups for listeners across the world to filter through and connect with. Rather than aimlessly searching for new artists, 'Discover' uses your taste to instantly bring directly to you bands, groups and singers you'll like.
Currently only avalible as a web app on Sportify's website, a mobile phone app is already in the works.