Lady Gaga made $62 Million last year:
http://www.rollingstone.com/music/news/17386/182042
Forbes calculates rockers' earnings based on net income from ticket sales, record sales and endorsement deals between June 2009 and June 2010. Unsurprisingly, album sales didn't drive most artists to the top of the list — giant tours and strategic corporate team-ups were responsible for most of the profits. Lady Gaga is the youngest performer in the Top 10, bringing in $62 million to score her first-ever appearance on the list thanks partially to partnerships with Polaroid, Virgin Mobile and Monster, who puts out her Heartbeats ear buds. Gaga just edged out Madonna, who has made the countdown for the past four years and raked in major cash last year on her giant Sticky & Sweet Tour.