The "I" EP contains a single, 21-minute song of complex arrangements and was a hint of the forthcoming album, 2005's "Catch Thirtythree". The EP, which has never been played live by the band, was written and recorded during jamming sessions of Haake and Thordendal. On "Catch Thirtythree", Meshuggah again used eight-string guitars, but utilized programmed drums for the first time also for the release, with the exception of two songs from 2001's compilation "Rare Trax". The album was self-produced by the band and was recorded at the studio that Meshuggah shares with Clawfinger. Hagström notes, "The eight-strings really have given us a whole new musical vocabulary to work with. Part of it is the restrictions they impose: you really can't play power chords with them; the sound just turns to mush. Instead, we concentrated on coming up with really unusual single-note parts, new tunings and chord voicings. We wanted to get as far away from any kind of conventions and traditions as we could on the album, so the guitars worked out beautifully."