Why don't my scores show up on the Leaderboards?

For your scores to be ranked on the Leaderboards, you must have an Xbox LIVE Gold membership. This level of membership has an annual fee through Microsoft. To download music you only need an Xbox LIVE Silver account, which is free, so if you've been downloading music and haven't purchased an account, you're most likely using a Silver account. To find out more, visit www.Xbox.com.