A type of hard rock rich in stylistic conventions including extreme loudness, powerful lead and rhythm guitars, extended solos including those on bass and drums, exaggerated sexuality in lyrics and performance poses, and a predilection toward tatoos, long hair, and leather attire. Name supposedly comes from the line "heavy metal thunder" in "Born to Be Wild," a 1970s hit for the band Steppenwolf. Leading exponents include Metallica, Van Halen, Def Leppard, Motley Crue, Alice Cooper, and Kiss.