While Motörhead are typically classified as heavy metal, speed metal or thrash metal (and often regarded as a foundational influence on the latter two styles), Lemmy dislikes such labels, preferring to describe the band's music simply as "rock n' roll". Motörhead's approach has remained the same over the band's career, preferring to play what they enjoy and do best; their appreciation of early rock and roll is reflected in some of their occasional cover songs. Motörhead's lyrics typically cover such topics as war, good versus evil, abuse of power, promiscuous sex, substance abuse, and "life on the road." The band's distinctive fanged-face logo, Snaggletooth, with its oversized boars' horns, chains, and spikes, was created by artist Joe Petagno in 1977 for the cover of the Motörhead album and has appeared in many variations on covers of ensuing albums. - GNU License.