CREATE TABLE table_43806 ("Release date" TEXT, "Album title" TEXT, "Record label" TEXT, "Disc number" TEXT, "Track number" TEXT, "Title" TEXT)

What kind of Disc number has a Track number of 02 on 7 september 2004?
SELECT "Disc number" FROM table_43806 WHERE "Track number" = '02' AND "Release date" = '7 september 2004'
SELECT "Disc number" FROM "table_43806" WHERE "Release date" = '7 september 2004' AND "Track number" = '02'