For me, music is in the choice of what not to play as much as in what you've chosen to play.
Musically, I didn't relate to Berlin. There seemed to be a lot of machine music made there - I don't think I saw a stringed instrument in two years.
Any kind of anthemic song, for the most part, they're on the positive side of things. It's not hard to identify when a melody is just one degree too complicated or one degree too simple and where that line of pop memorability lies.