For the next 7:06, if you have any appreciation of how hard it is to come up with rhyming verses off the top of your head, any at all, prepare to be blown away.

Hi. Welcome to Soundtrack. Tonight, we're looking at Freestyle Rapping.

In the early 1990s, some students at the University of California got together and starting making music for the college's radio station. That small group quickly became the Solesides crew, which in turn became Quannum Projects, a label that put out some of the best hip-hop albums of the turn of the millennium, and which at one time or another featured artists like DJ Shadow, Lyrics Born, Gift of Gab & Chief Xcel (Blackalicious) and Lateef the Truth Speaker.

While Solesides wound up in 1996, in 2000 Quannum released a compilation album called Quannum Presents Solesides Greatest Bumps, collecting much of the group's best work from the 1990s. While it spans two discs, and is entirely impressive, nothing on the album is quite as impressive - or downright intimidating - as this.