What's most important in a pop tune? "It's got a good beat; I can dance to it." So is it any wonder that Van Halen can dance to the groove of "Love Machine" by The Miracles while performing their own song "Unchained"? The latest mashup from Bill McClintock doesn't just have one group singing over the other's music; both the music and vocals are full integrated, and it works. This is as much a dance video as it is a music video. And those stage costumes! There's also a short guest appearance by Ozzy Osbourne as we hear Jake E. Lee's solo from "Bark at the Moon." McClintock calls this song "Unchained Love Machine" by Van Miracles.