A good short read that summarizes, especially if you read the notes, much of Mozart's life. It is a source I will keep handy in the future for quotes. If you are trying to read this as a biography of Mozart's life, though, I would suggest another book first since this is basically, except the brief editorial sections, excerpts from the letters of Mozart -- as the title implies. Ergo, it isn't as comprehensive as a 200 or 300 page biography. The upside is that this collection of excerpts allows you to see how Mozart thought and it's only 100 or so pages, so it's easy to breeze through. And it's free.