The photo above is from the 1972 yearbook of Prahran High School in Melbourne, Australia. The young man pictured would grow up and go on to play bass in one of the biggest rock bands of all time for two brief but amazingly productive years.

Even though his stint in said band was short, he laid down the low end on five of this group's classic, early albums, securing him a permanent place in the annals of rock music. He recently wrote a fantastic book about his life inside and outside of the band. Can you guess who this is?