Kid Rock started his music career as a rapper and DJ, releasing his debut album "Grits Sandwiches for Breakfast" (1990) on Jive Records. His subsequent independent releases "The Polyfuze Method" (1993) and "Early Mornin' Stoned Pimp" (1996) saw him developing a more distinctive style, which was fully realized on his breakthrough album "Devil Without a Cause" (1998), which sold 14 million copies. This album and its follow-up, "Cocky" (2001), were noted for blending elements of hip hop, country, rock and heavy metal. His most successful single from that period, "Cowboy" (1999), is considered a pioneering song in the country rap genre. His best-selling singles overall are "Picture" (2002) and "All Summer Long" (2008). Starting with his 2007 album "Rock n Roll Jesus", his musical output has tended to be in the country and rock styles.