I'm evaluating Spotify right now and I'm finding the Radio rather narrow in its selection of tunes - I start an Album station and I get the same songs repeated over and over and over and maybe a maximum of 4 artists total.  I want my music service to serve me a broad selection of music and to introduce me to new bands but Spotify radio seems pretty limited.  Is there any way to set the radio to be more experimental? To broaden its search? (I'm coming over from RDIO which had an unbelievably broad and tunable recommender engine).  

EDIT: Actually in doing a bit of a web search this seems to be a common complaint of Spotify 😞