Question: What kind of music did the "Backwater Blues" lyricist perform?
Answer(s):
answer: Blues
answer: Jazz

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:music.lyricist.lyrics_written ns:m.0zh4v1n . 
?c ns:music.artist.genre ?x .
}