Despite initial difficulties in finding a producer willing to take charge of the debut album of a newly signed band, Don Gilmore ultimately agreed to head up the project, with Andy Wallace hired as the mixer. Recording sessions, which mostly involved re-recording the songs off the demo tape, began at NRG Recordings in North Hollywood, California in early 2000 and lasted four weeks. Shinoda's rapping sections in most of the songs were significantly altered from the original, while most choruses remained largely unchanged. Due to the absence of Dave Farrell and Kyle Christener, who took part in the 1999 extended play, the band hired Scott Koziol and Ian Hornbeck as stand-in bassists; Delson also played bass throughout most of the album. The Dust Brothers provided additional beats for the track "With You".