If you only watch one video today, make it this one. The video is 19 minutes of spectacular footage from inside Tree Sounds Studios. The video features a meeting of the minds that includes Big K.R.I.T., Yelawolf, Pill, Mike Bigga (Killer Mike), Emilio Rojas, and others. This segment is from a studio session in which Yelawolf and K.R.I.T. are working on the unreleased “Happy Birthday Hip Hop”. The video also has footage of B.o.B.’s 21st birthday from inside the studio. The footage is hip-hop in one of its truest forms, the source. Check it out below.