John Cougar Mellencamp is an American singer-songwriter and musician known for his catchy, populist brand of heartland rock, which emphasizes traditional instrumentation. His music is noted for its blend of rock, folk, and country elements, often exploring themes of life in small-town America. Mellencamp's most influential works include hits such as "Jack & Diane," "Pink Houses," and "Small Town." A member of the Rock and Roll Hall of Fame, his significant contributions to the music industry have made him a key figure in the development and popularity of the heartland rock genre.