Mag Earwhig! is the 10th studio album by American indie rock band Guided by Voices. Following the dissolution of the group's "classic" lineup, band-leader Robert Pollard recruited Cleveland group Cobra Verde as his backing band, while retaining the Guided by Voices name. It was the second release to feature future long-term collaborator Doug Gillard. Gillard had previously played on and co-wrote the song "Mice Feel Nice (In My Room)" on the Tigerbomb EP. Most of Mag Earwhig! was recorded in a professional studio in Cleveland by the new lineup and marked a departure from band's trademark lo-fi sound; additional songs were also recorded in Dayton, Ohio.