Mashup of the Day: Taylor Swift’s ‘Shake It Off’ with Aerobics Video from 1989 in Perfect Harmony

Is this the new "Dark Side of the Rainbow?"

For some strange reason, Taylor Swift's earworm "Shake It Off" matches up in time with the 1989 Crystal Light National Aerobic Championship Opening video.

You've probably seen this bizarre of the spandex-clad dancers before, but now there's a whole new layer of weirdness and wonder to enjoy.