The most haunting pieces on The Undercover Soundtrack delve far deeper than inspiration. My guest this week shares a very personal story. Her debut novel, about a teenage piano prodigy, didn’t come from a captured track in headphones. It was her own brother learning Rachmaninoff piano concertos in the room above hers. The character struggles with bipolar disorder, as she has in her own life. A later novel tackles an incestuous and doomed love between brother and sister, a harsh and frightening story that she says took a severe toll on her own mental health. Her fiction has won multiple awards and her brother is finishing his studies at the Royal Academy of Music. She is Tabitha Suzuma and she’ll be here on Wednesday with her Undercover Soundtrack.