In 1958, Eddie Cochrane hit the airwaves with a teenage anthem of angst called Summertime Blues. It peaked at #8. Among other things, the song speaks to the then voting age in the United States of 21. While it was subsequently lowered to 18, Cochrane never got to exercise his democratic right. Ironically he was killed in a car crash in Britain at the age of 21 in 1960.
The group Blue Cheer did a credible cover of Summertime Blues in 1968 but for my money the definitive version of the song was by The Who on their 1970 Live At Leeds LP, one of the greatest live albums of all time. Here's a performance from the Monterery Pop Festival.