Mantia toured several legs of the Chinese Democracy Tour with Guns N' Roses from 2000 until 2006, when he left the band to take care of his newborn child. Frank Ferrer, originally brought in as just a replacement drummer for the tour, eventually replaced Mantia as full time drummer for the band. "Chinese Democracy" was released in 2008, and featured drums from Mantia on every track except the title track. Mantia was also credited with writing the songs "Shackler's Revenge" and "Sorry". Parts of Mantia's drumming on the album were note-for-note re-recordings of Josh Freese's parts, who left the band before Mantia joined. Mantia was also responsible for arrangements on "Shackler's Revenge", "Better", "Street of Dreams", "There Was a Time", "Sorry", "Madagascar", and "Prostitute, initial production on "Shackler's Revenge" and "Sorry", engineering on "Sorry", drum machine and drum programming on "I.R.S." and Logic Pro engineering for the entire album.