Here's a quick test I did using the Slow-Mo feature on the iPhone 5S. I recorded the audio at 60BPM, then recorded the same beat at 240BPM with the iPhone Slow-Mo setting(120FPS). I loaded the original audio video files into Premiere Pro and slowed the video down to 30FPS. The result is pretty Interesting. I know the lighting stinks and the compression definitely caused some artifacts, but the whole point of this was proof of concept, and I'm pretty happy with it. So there you go.