Dude whoa. There is a Tumblr Music Video Generator, and it’s probably not safe for those with epilepsy. First, you select from a variety of themes like glitchgifs, rhombus-fruit, rapgifs, weird-n-rad, and my personal favorite: iheartcatgifs, then drop any mp3 into the page to watch as the images are spliced to the beat of the track. I tried it out with this Old Monk track on the iheartcatgifs setting, and the video was a beautifully chaotic and colorful mess of cute kitty cats popping up on the screen.
Try it out at tumblrmusicvideogenerator.masterofshapes.com