King Crimson -

King Crimson is led by founding guitarist Robert Fripp and rounding out the quartet are longtime guitarist/vocalist Adrian Belew, Warr guitarist/bass guitarist Trey Gunn and drummer/percussionist Pat Mastelotto. Fripp has led the band through more than three decades of musical experimentation that completely pushes the structure of rock, jazz and classical music to its limits. King Crimson has enjoyed some measure of commercial popularity over the years and its fan base is primarily a diehard cult, though regular touring has broadened the band's appeal, and a recent tour opening for Tool successfully exposed another generation to King Crimson's challenging - yet rewarding - music.