"Sold My Soul to Yo Mama" (4th track) is included in LP Underground 4.0, it contains samples of "Points of Authority" and "Papercut" that originally appeared in their first studio release of the band, Hybrid Theory (2000).
The EP includes the demos of the songs like "Points of Authority" and "Forgotten" from their studio album Hybrid Theory.
If you download the Linkin Park package on DJ Hero 2, you can play with a scratched version of "Pts.of.Athrty".
"Sold My Soul to Yo Mama" (a track made by Linkin Park turntablist and sampler Joe Hahn, which includes samples from songs "Points of Authority" and "Papercut"), was released exclusively for LP Underground 4.0.
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