Information: - King Crimson are an English rock band formed in London in 1968. The band has undergone numerous formations throughout its history of which 21 musicians have been members; since January of 2017 it has consisted of Robert Fripp, Jakko Jakszyk, Tony Levin, Mel Collins, Pat Mastelotto, Gavin Harrison, Bill Rieflin and Jeremy Stacey. Fripp is the only consistent member of the group, and is considered the band's leader and driving force. The band has earned a large cult following. - The Arrow is the debut album by the multi-media project fronted by Trey Gunn and Joe Mendelson called Quodia . It is a concept album divided into seven chapters . - The Chapman Stick ("The Stick") is an electric musical instrument devised by Emmett Chapman in the early 1970s. A member of the guitar family, the Chapman Stick usually has ten or twelve individually tuned strings and has been used on music recordings to play bass lines, melody lines, chords, or textures. Designed as a fully polyphonic chordal instrument, it can also cover several of these musical parts simultaneously. - Trey Gunn (born December 13, 1960) is an American musician, known for his membership in progressive rock band King Crimson from 1994 to 2003, playing Warr Guitar and Chapman Stick. After reading the paragraphs above, we are interested in knowing the entity with which 'the arrow ' exhibits the relationship of 'genre'. Find the answer from the choices below. Choices: - family - history - music - musical - progressive rock - rock
Answer:
progressive rock