Queens of the Stone Age (commonly abbreviated QOTSA) is an American rock band formed in 1996 in Palm Desert, California. The band was founded by vocalist and guitarist Josh Homme, who has been the only constant member throughout multiple line-up changes. The current line-up consists 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 also have a large pool of contributors and collaborators. Queens of the Stone Age are known for their blues, Krautrock and electronica-influenced style of riff-oriented and rhythmic hard rock music, coupled with Homme's distinct falsetto vocals and unorthodox guitar scales.