Watch Michael Jackson in action before he became the King of Pop -- belting out the Jackson 5's No. 1 hit "Dancing Machine" with his brothers on the "The Tonight Show" back in April 1974.
It was the Jackson 5's very first time singing for Johnny Carson on the show. And with the addition of youngest brother Randy, it was actually the Jackson 6!
The family can be found on "Tonight: Four Decades of 'The Tonight Show' Starring Johnny Carson," a new 15-disc DVD set available Tuesday in stores and online at JohnnyCarson.com.