Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_2 (musical_guest__song_performed_ VARCHAR, air_date VARCHAR)
### Question:
What is the Musical Guest (Song performed) for the episode aired on 13 july 2008?
### Answer:
SELECT musical_guest__song_performed_ FROM table_name_2 WHERE air_date = "13 july 2008"