The Isley Brothers is a highly influential, successful and long-running American music group consisting of different line-ups of six brothers, and a brother-in-law, Chris Jasper. The founding members were O'Kelly Isley, Jr. (1937 - 1986), Rudolph Isley, Ronald Isley and Vernon Isley (1942–1955). They are the only act to have at least one Hot 100 hit in each of six consecutive decades: the 1950s, 1960s, 1970s, 1980s, 1990s, and 2000s. The Isleys (as they are commonly called) were inducted to the Rock & Roll Hall of Fame in 1992.