Born to Be Wild" is a song written by Mars Bonfire and first performed by the band Steppenwolf. It is often invoked in both popular and counter culture to denote a biker appearance or attitude. It is most notably featured in the 1969 film Easy Rider. Sometimes, "Born to Be Wild" is described as the first heavy metal song, and the second-verse lyric "heavy metal thunder" marks the first use of this term in rock music (although not as a description of a musical style but rather a motorcycle).^[5][6]