Hilarious song: Bieber, Beatles, Slipknot, Rebecca Black, all stealing same notes

(CBS) - Hank Green of the "vlogbrothers" has put out an interesting musical sketch that shows what he calls the "ice cream chord progression."  In short, a progression of notes that underpins a gazillion pop songs from the 1950s right up until "Friday."

In four simple chords, Green shows us that Justin Bieber and Slipknot aren't too different from one another or just about any popular music artist for the past few decades. Unless, of course, you're a Justin Bieber or Slipknot fan... in which case, they are each a beautiful and unique snowflake.