Madonna and John Mellencamp will be inducted into the Rock and Roll Hall of Fame next year, alongside Leonard Cohen, the Ventures and the Dave Clark Five. Philly Soul songwriter/producer team Kenny Gamble and Leon Huff will be presented the Ahmet Ertegun Award (previously known as the non-performer category) and blues harmonica player Little Walter will be inducted in the sideman category. This is Madonna’s first year of eligibility; her debut single, “Everybody,” was released twenty-five years ago in 1982. The induction ceremony will take place on March 10th, 2008 at New York’s Waldorf Astoria. MORE