At the recommendation of Buckethead, childhood friend and frequent collaborator Bryan "Brain" Mantia was brought in as drummer. Baker felt Freese's drums needed to be rerecorded, as they sounded too "industrial"; Mantia described them as sounding digital and electronic: "there was not a lot of air moving". Rose felt that the finished album should reflect the "energy" of those who worked on it, and so felt Freese's drums should be replaced. Geffen employee Tom Zutaut said that Freese's drumming "was spectacular. I would not have wanted to be in Brain's shoes. Basically we were saying to 'We have got a brilliant performance of this and now we need you to recreate it'."