In 2009, Kendrick Lamar was an up and coming rapper named K-Dot with a few mixtapes under his belt.
In the throwback interview below, Kendrick introduces himself and then (at about the 3 minute mark) spits a freestyle over the Kanye West track 'So Appalled.'
If you are wondering why Lamar is using a track in 2009 that didn't officially come out until 'Ye's 2010 album My Dark Twisted Fantasy it's because an early version of 'So Appalled' had leaked.
What do you think of a young K-Dot? Here's one of his mixtapes from that time period.