Toby Keith topped the Forbes <a href="http://www.forbes.com/sites/zackomalleygreenburg/2014/07/28/the-worlds-highest-paid-country-musicians-2014/" target="_blank" target="_blank">list of highest-earning country stars of 2013.</a> The singer, whose 2013 album was "Drinks After Work," made $65 million last year -- much of it from business interests such as a chain of restaurants. 