I was a little unhappy that there wasn't more Abby and Jake to be honest.... Plus it seemed the music wasn't really a focus anymore despite the fact that AJ is still in Runaway Train. I know I know I know, Mia wasn't musically inclined but still. In Music of the Heart, music was a really big thing. Both main characters had amazing voices and were in bands. Plus most of the story took place while Runaway Train was on tour. It would be weird for the same thing to happen twice but this felt like nothing more than a story between two people, one of whom just happened to be in a band. The music aspect is what really set the first book apart for me so I was disappointed. 
 Don't get me wrong, I still loved the book. It was hilarious and my face actually started to hurt from holding back laughter and smiling so much at AJ's antics. Mia's problems were real and it was really cool to get to see more of Abby and Jake, even if it wasn't as much as I would have liked.