For the music industry, 2013 was a year of video exploration. Artists didn't stop at videos for their songs—trailers, short films, skits, and misguided attempts to somehow incorporate interaction into all of this became commonplace promotional tools. Artists turned city walls into stages and we saw the first 24-hour music video. Moving forward, we'll have to think about what the term "music video" really means. For the moment, however, we still have plenty of one-song creations to work with. Here are the best music videos of 2013.