The band also has a large pool of contributors and collaborators. Since 2013, the lineup has consisted of Homme alongside Troy Van Leeuwen (guitar, lap steel, keyboard, percussion, backing vocals), Michael Shuman (bass guitar, keyboard, backing vocals), Dean Fertita (keyboards, guitar, percussion, backing vocals), and Jon Theodore (drums, percussion). The band was founded by vocalist and guitarist Josh Homme, who has been the only constant member throughout multiple lineup changes. Queens of the Stone Age (commonly abbreviated as QOTSA) is an American rock band formed in 1996 in Seattle, Washington.