The play takes place over several decades from the late 1960s until 1990, ending with a concert given by The Rolling Stones that year in Prague. Recurrent references are made to a glimpse by one of the main characters of the young Syd Barrett performing "Golden Hair". Barrett's physical and mental decline also plays a role in the drama (Barrett in fact died during the play's run). The underground Czech group The Plastic People of the Universe are held up by another character as an ideal of resistance to Communism. The poetry of Sappho is another recurrent motif; its pagan sensualism is implicitly compared with the anarchic erotic force of Rock music.