CREATE TABLE table_4089 ("Track no." FLOAT, "Track" CLOB, "Original Artist" CLOB, "Soloist ( s ) " CLOB, "Vocal Percussionist" CLOB, "Arranger ( s ) " CLOB)

What is the track whent the vocal percussionist is unknown?
SELECT "Track" FROM table_4089 WHERE "Vocal Percussionist" = 'unknown'
SELECT "Track" FROM "table_4089" WHERE "Vocal Percussionist" = 'unknown'