user: Question: What is the Musical Guest (Song performed) for the episode aired on 13 July 2008?
Columns: ['Episode Number', 'Air Date', 'Guest Host', 'Musical Guest (Song performed)', 'Coat Of Cash Wearing Celebrity']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, '8 June 2008', 'Katie Price and Peter Andre', "The Courteeners ( No You Didn't, No You Don't )", 'Andy Abraham']
SQL:

assistant: SELECT "Musical Guest (Song performed)" FROM "Table" WHERE "Air Date" = '13 July 2008';