SO. MUCH. TRIVIA: We're not going to start this off by saying "you know that person who knows everything about music" because you well may be that person. So many are. It's an obsession, and the Grammys are a big part of that, and all the stats and winners over the years can fill up -- well -- a mighty big app. The Guess the Grammys Phone App gives you a chance to guess this year's picks, and look at all the big names of years gone by. SWEET TO THE EARS: It's a free app. You're watching the Grammys on Sunday, January 31st. Why not have it in front of you?