CREATE TABLE table_68913 ("Round" TEXT, "Name" TEXT, "Song" TEXT, "Score" FLOAT, "Status" TEXT)

What round has this song: - / - ?
SELECT "Round" FROM table_68913 WHERE "Song" = '陶喆、蔡依林 - 今天你要嫁给我/曹格 - 世界唯一的你'
SELECT "Round" FROM "table_68913" WHERE "Song" = '陶喆、蔡依林 - 今天你要嫁给我/曹格 - 世界唯一的你'