To call a person as legendary as Joni Mitchell underrated might seem silly-but last year, the Rolling Stone co-founder Jann Wenner chose not to include her or any other women in a book about rock-and-roll history called The Masters. Defending his selection of only interviews with white male musicians, Wenner told The New York Times that Mitchell was simply not a "philosopher of rock ‘n’ roll." This comment was baffling-he later apologized-yet also clarifying, revealing the biases long held by some of music’s most powerful gatekeepers.