I've almost finished my first game, an nice simple one which I'm not expecting to sell too many of, it was more of a learning exercise for Cocos2D. One thing thats 'missing' is music. Its got sound effects, but no music. Is this much of a problem? Pretty much all games I've seen have music, so if its left out would you feel the game is incomplete? Just curious for peoples opinions really. I'm not sure I can be bothered to try to write some for this game (got a much better idea for game 2 that will need music). Are there any sites with free in-game music that I could slip in?