I Stumbled across the neverending playlist and it is pretty great if there are certain artists that you love all their music.
Basically you type in the artist that you are interested in and then it creates a playlist of music videos that you can watch or just have playing in the background. The site is a little finicky and will hang-up sometimes when trying to build a playlist which requires reloading the page, but other than that it is pretty good.
Definitely worth checking out.