Question: Liam O'Connor is a multi-instrumentalist musician, described as "the Jimi Hendrix of the accordion", Hendrix was an American rock guitarist, singer, and songwriter, and which organization, that describes him as "arguably the greatest instrumentalist in the history of rock music"?
Sentence (from "Death of Jimi Hendrix"): One of the most influential guitarists of the 1960s, he was described by the Rock and Roll Hall of Fame as "arguably the greatest instrumentalist in the history of rock music."
Relevant evidence: No