Surely by now you've seen the video circling the internet, of a mashup of Metallica's "Enter Sandman" mashed up with Huey Lewis and The News' "Hip to Be Square."

It's weird how it fits too perfectly, and there's even a little Godsmack guitar solo in there.

We looked into the creator, Bill McClintock, who's a middle school music teacher. He majored in Music Technology and Music Education at Duquesne University.

When it comes to creating the videos, he says it can take weeks to find a good matchup to mashup, but once he does it takes around 5-10 hours just to mix the audio. The mashing of the videos take 2-3 hours at a time.

Just check out some of his other videos, so you can see the absolute musical genius we're dealing with here:

Marvin Gaye and RATT- "I Heard It Round and Round the Grapevine":

In an interview with Forever State College, Bill says he's particularly happy with how Marvin's vocals line up with Bobby Blotzer's drum fill around 2:42.

Kool & the Gang and Van Halen- "Celebrate with the Devil" 

Something about David Lee Roth singing disco just doesn't feel right, but it sure matches up pretty well.

Chicago and Black Sabbath - “Plenty High or 6 to 4”

Ozzy's "Sweet Leaf" matches up too well with Chicago's "25 or 6 to 4." Some of these videos make me hope for some sort of live concert where these bands get together and play some of these live.

Spiceknot - "If You Wanna Breathe My Sulfur"

This one combines my secret favorite, "Wannabe" by Spice Girls, and goes the exact opposite genre to Slipknot's "Sulfur."

Donzig - "Bad Mother"

The Bee Gees and Deep Purple - “You Should Be Smoking”

Van Halen/Earth, Wind & Fire/Stevie Wonder - "Beautiful Shining Star of Superstition"

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