If I'm not mistaken, Rdio's engineering team helped build Pandora's on-demand service. I've switched to it from Spotify after using Rdio in the past. Its recomm

If I'm not mistaken, Rdio's engineering team helped build Pandora's on-demand service. I've switched to it from Spotify after using Rdio in the past. Its recommendations feel similar to Rdio's, but the interface is a bit lacking. There aren't general recommendations. Instead, you must build a playlist and then you can add a set of recommended songs to the playlist. Of course, there are also radio stations.