13) Dave Grohl (Net worth: $260 million)

Former  Nirvana drummer Dave Grohl is a popular American rock musician, who has released seven studio albums with his rock band Foo Fighters. As of May 2014, the band have sold over 11.1 million albums.

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12) Roger Waters (Net worth: $270 million)

English musician, singer, composer and songwriter Roger Waters was the co-founder and lead singer of the popular British rock band Pink Floyd. His solo career achieved international success. His tour  The Wall Live from 2010 to 2013 became the highest-grossing of all time by a solo artist; generated box office receipts of $459 million.