What is the fine-grained topic of the following text: Written by Ali Adler and directed by co-creator Brad Falchuk, the episode aired on Fox in the United States on February 14, 2012, and features Valentine's Day love songs performed by the McKinley High glee club. Only return the topic.
Valentine's Day episode of McKinley High glee club directed by Brad Falchuk and written by Ali Adler.