What is the song choice when the theme is not aired?
CREATE TABLE table_456 (
    "Episode" text,
    "Theme" text,
    "Song choice" text,
    "Original artist" text,
    "Order #" text,
    "Result" text
)
SELECT "Theme" FROM table_456 WHERE "Song choice" = 'Not Aired'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the song choice when the theme is not aired? ### Input: CREATE TABLE table_456 (
    "Episode" text,
    "Theme" text,
    "Song choice" text,
    "Original artist" text,
    "Order #" text,
    "Result" text
) ### Response: SELECT "Theme" FROM table_456 WHERE "Song choice" = 'Not Aired'