The star and script writer of Easy Rider
, Peter Fonda, had wanted Bob Dylan to write the film's theme song. However, when he approached the king of folk-rock, he declined. Instead, Dylan quickly scribbled a lyric fragment on to a napkin, before telling Fonda to give it to Roger McGuinn
. The Byrds frontman took Dylan's lines turning them into the first verse then expanded upon them with his own lyrical and musical contributions.