Red Hot Chili Peppers are an American rock band formed in Los Angeles in 1983
I've heard that they are like a jam band live, which is great for summer festivals. 
YES they made very rocking performance
Bad Boys from Boston" and "America's Greatest Rock and Roll Band". 
Perry and Hamilton, originally in a band together called the Jam Band, met up with Tyler, Kramer, and guitarist Ray Tabano, and formed Aerosmith. In 1971, Tabano was replaced by Whitford, and the band began developing a following in Boston. They were signed to Columbia Records in 1972, and released a string of gold and platinum albums, beginning with their 1973 eponymous debut album, followed by "Get Your Wings"
Red Hot Chili Peppers
Red Hot Chili Peppers are an American rock band formed in Los Angeles in 1983. The group's musical style primarily consists of rock with an emphasis on funk, as well as elements from other genres such as punk rock and psychedelic rock. When played live, their music incorporates elements of jam band due to the improvised nature of many of their performances. Currently, the band consists of founding members vocalist Anthony Kiedis and bassist Flea (Michael Peter Balzary), longtime drummer Chad Smith, and former