Last year I attended a conference where I heard one of the Discover Weekly scientist talk about the Discovery Weekly algortihm. I remembering her mentioning they discard certain genres from being included in the training data to account for christmas music as an example. Mostly I listen to EDM, alternative rock, and musicals and I always appreciated the fact that musical songs were *never* included in my discover weekly playlist... until this week. I am very particular on which soundtracks I actually enjoy and just because I like one shows soundtrack doesn't mean I'm going to like another. It was really jarring to be listening to some EDM tracks that I was really enjoying only to be switched to a song from the god awful TV show Galavant, switched back to EDM, only then to be played a song from 'The Last Five Years'. I never disliked a playlist more! If I'm part of an A/B test, make note that I am not happy with this change and your data scientists need to understand that enjoying musical soundtracks is not the same as enjoying another genre of music. One type does not fit all!