Ready to lose hours of productivity digging through decades of music from around the world? Check out this app, called Radiooooo, that uses a world map for you to access tunes from every decade back to 1900. Just click on a country of interest and pick a decade. Choose a mood like “slow” or “weird” or both, and a song from that time will start playing. Details like release date, album art, and who added it to the database will also appear. You can even add tunes yourself. Check it out!