Maddona leads the top 10 highest-grossing acts of 2008
Madonna tops the annual survey combining sales of concert tickets, albums and digital downloads to measure which acts were most popular with the broadest swath of music lovers. Celine Dion, The Eagles, AC/DC, Metallica, The Jonas Brothers, Carrie Underwood, and even Kid Rock rank among the top 20 of 2008 with at least 50 million in sales.