My Pandora playlist is deteriorating

I like remixes of classic female vocal tracks, dont get me wrong. In fact there are some shirley bassey tracks that just blow my mind when properly remixed and set to a modern dance beat. That is not to say that I like shirley bassey straight up, but pandora based on a one time "i really like this shirley bassey remix" is making damn sure that I get a chance to listen to everything she has EVER PRODUCED.

Tis madness.

Dont even get me started on the streisand thing it's got going right now. I want an auto downvote feature for certain artists when they pop up in my playlist.