August 11 marks the 44th anniversary of what a lot of people consider to be the birth of hip hop -- the basement party at 1520 Sedgwick Avenue in the Bronx where Kool Herc first matched beats and extended "the break." Google is celebrating this with today's interactive Doodle, a DJ tutorial narrated by Fab Five Freddy that also explains the history of "the break." You can DJ with some classic breaks, including The Incredible Bongo Band's "Apache," Zapp's "More Bounce to the Ounce," Billy Squier's "The Big Beat," George Clinton's "Atomic Dog," and scratch them too. Give it a try over at Google.