CREATE TABLE table_27626 ("Episode" CLOB, "Theme" CLOB, "Song choice" CLOB, "Original artist" CLOB, "Order #" CLOB, "Result" CLOB)

What is the theme where the original artist is AC/DC?
SELECT "Theme" FROM table_27626 WHERE "Original artist" = 'AC/DC'
SELECT "Theme" FROM "table_27626" WHERE "Original artist" = 'AC/DC'