This "freestyle" was originally from Mr. SOS' 2004 mixtape, Mr. SOS For President. It was always confusing to me because Mr. SOS never raps on this track but I am assuming he was the one responsible for flipping the sample? Regardless this track was a slap in the face back in '04 that introduced everyone to Tonedeff and his incredible skill. If you would like to download the mixtape, hit up the itunes link above.
Tonedeff