CREATE TABLE table_name_19 (disc_number VARCHAR2, track_number VARCHAR2, release_date VARCHAR2)

What kind of Disc number has a Track number of 02 on 7 september 2004?
SELECT disc_number FROM table_name_19 WHERE track_number = "02" AND release_date = "7 september 2004"
SELECT "disc_number" FROM "table_name_19" WHERE "02" = "track_number" AND "7 september 2004" = "release_date"