King Crimson are a progressive rock band. They formed in England in 1969. Their music is usually called progressive rock, but they also have jazz, gamelan, classical music, heavy metal and experimental music in their sound. They are not very popular, but they have a loyal group of fans. Their music has influenced a lot of bands and styles of music. King Crimson are most well known for their first album, In the Court of the Crimson King, which helped create progressive rock. Only one person has been in the band since they started, guitarist Robert Fripp. Right now, the people in the band are Robert Fripp, Mel Collins, Gavin Harrison, Jakko Jakszyk, Bill Rieflin, Jeremy Stacey, Tony Levin, and Pat Mastelotto.