Frank Zappa, because he was a great musician and song writter and fantastic guitarist and he didnt sell out to pop radio. Plus if you ever saw him testify before congress or be interviewed on many tv shows you would have seen that humanity lost a genius, who told it like it is in his satarical songs. But, he did all kinds of music from rock to symphonic orchestra. When he died the 20th centry lost its living Bethoven, Back, Wagner.
You tube the man.