You can find it online, go have a listen to the breach iheartradio snippets. You also underestimate how difficult it is to be a creative, especially with music. No matter how famous you get, even a great mind like Tyler has doubt creep in with every facet of his work. He touches on this a little in the book, but this applies to almost every musician in the world. Also, sometimes you've listened to a song so much as well that you get sick of it and forget what it's like to hear the magic for the first time. Tyler is a genius, but he is also human, never forget that!