Underground 4.0
Producer – Don Gilmore, Kut Masta Kurt (tracks: 3), Mr. Hahn (tracks: 1) Fourth EP released through Linkin Park's fan club (LPU). It contains 2 studio tracks, 2 live tracks recorded on the 2004 "Projekt Revolution" tour (a Nine Inch Nails cover "Wish" and "One Step Closer") and 2 more live tracks recorded in the summer of 2004 ("Breaking the Habit" from their 'Rock am Ring' performance and "Step Up/Nobody's Listening/It's Goin' Down" from their set before the recorded "Collision Course" concert).