In January and February 2007, Shiflett left many updates on the band's official postboard regarding their current recording sessions. Still without a full-time drummer, Foo Fighters bandmates Dave Grohl and Taylor Hawkins were revealed to be sharing the drumming work. "Well it was just a lucky turn of events where we tried to start tracking drums with this other guy and it didn’t really work. Dave dropped by the studio one day and I told him what was going on and he offered up his services... he also offered up Taylor’s services", Shiflett told an online fanzine. As well as Grohl and Hawkins, the album also featured touring Foo Fighters members Rami Jaffee (keyboards) and Drew Hester (percussion).