What is the fine-grained topic of the following text: However, I recently obtained one of these books and finished reading it just this morning, and one of my takeaways was that it was the newest Haydn book I had (2013), it had been released almost six years ago, and yet I had never heard of it, I was totally unaware of its existence until I happened across a mention of it over the Holidays. Only return the topic.
Reading a recent Haydn book