Here's another great quote from Bruce Springsteen: “I can sing very comfortably from my vantage point because a lot of the music was about a loss of innocence, there's innocence contained in you but there's also innocence in the process of being lost.” -Bruce Springsteen
I said before that Bruce Springsteen's songs have very defeatist lyrics. In reality, that's not always true. His lyrics are always poetic and powerful, but they do not have to be defeatist. In fact, there are some uplifting quotes, and some quotes about cleansing oneself, and certainly about innocence. For example, one of my favorite songs by him is called Long Walk Home. It is about a break-up, and recovering from the loss; the song comes full-circle, and the lyrics are beautiful. A good line from his song is, "Well, everybody has a neighbor, everybody has a friend, everybody has a reason to begin again." (click below to read more)
I think that this song is applicable to To Kill a Mockingbird. The narrator in the song breaks up with his girlfriend, but he also recovers from it, scarred but more mature from having lost some of his previous innocence. This can be compared to Scout, going through some bad times and sad times while Atticus is fighting his case, and as a result of that case, and losing some of her childhood innocence during it, but coming out of it all with a better understanding of the world and with more maturity.