Make custom radio playlists!

[Anna1020]

I saw this feature in another very popular music streaming service, and that is to add multiple artists you like to a radio! This playlist would select songs from those artists as well as possibly add reccomendations to the radio. 
Instead of adding music from different artists manually, Spotify will take user selected artists, add music based on their similarities to one playlist, and also maybe add other songs based on similarity. This playlist would also possible update automatically.