Complex sentence: The title is a reference to the song "About a Girl" by Nirvana, a band that is featured in the book, and Patti Smith's tribute to Kurt Cobain, "About a Boy".
Split into simpler sentences: The title is a reference to the song "About a Girl" by Nirvana. The band is featured in the book, and Patti Smith's tribute to Kurt Cobain, "About a Boy".