True friendship, true community, social and sexual alienation, the death of God, the importance of the present momnet, individual autonomy, the corruption of the state, revolution, the end of the present age -- such are the intellectual themes of classic rock. Sixties rock music left behind the harmless bubblegum and surfing ditties of the 1950s to become a vehicle for the thoughtful commentary upon the human condition. Theories and motifs from philosophy,...