He was the guitarist and primary songwriter for one of the biggest American rock bands of the '70s -- can you tell who he is from this yearbook photo?

Here's some more clues: during his 13 years with this still-famous group, he helped produce eight gold albums, three sextuple platinum albums, and a million-selling single. He left the band in 1983 after finding a higher calling, and continues to produce critically acclaimed music under his own name and with various other groups to this day.

Think you know who we're talking about? Then carry on to the next page, see if you're right!