What happened to my iphone's music library?

I have an iPhone 4S. I recently decided to be stupid and this is what I did: I went to Settings>General>Reset>Erase All Content and Settings. When I was downloading some music and transferring it from my computer to my phone, I realized something was different. Instead of the music library being organized in sections from A-Z, it was all bunched up together, but still in ABC order. I don't like it at all! It bothers me somehow. My dad's phone is the same way and he never reset it or anything. I just don't get it! Is this fixable? If it is, just please, help me!

I think the iPhone isn't sorting by letter yet as you may not have enough songs to do that. Try adding more songs and see if it should automatically start sorting.