are an English rock band formed in June 1975 by bassist, singer and songwriter Ian Fraser Kilmister, professionally known by his stage name Lemmy, who has remained the sole constant member. The band are often considered a precursor to, or one of the earliest members of, the New Wave of British Heavy Metal, which re-energised heavy metal in the late 1970s and early 1980s. As of 2012, Motörhead have sold more than 30 million albums worldwide.
Motörhead are typically classified as heavy metal, and their fusion of punk rock into the genre helped to pioneer speed metal and thrash metal. Their lyrics typically cover such topics as war, good versus evil, abuse of power, promiscuous sex, substance abuse, and, most famously, gambling. The name "Motörhead" is a reference to users of the drug amphetamine. and "Snaggletooth".