1. Make sure you have a Microsoft account.
2. On the Xbox 360 dashboard, select "My Xbox," and select your account.
3. Select "Account Management."
4. Click on "Music" and "Browse Music."
5. Select the music you want to download.
6. Once you have downloaded the music, select "My Xbox" and "My Music."
7. Select the song you want to sing, and press the "A" button.
8. The game will now start.
9. To sing, hold the microphone up to your mouth and sing.
10. Your pitch and tone will be automatically adjusted to match the song.
Here are some additional tips for singing in game:
* Make sure your microphone is properly plugged into the Xbox 360.
* Stand in a quiet room so that there is no background noise.
* Sing in a clear and steady voice.
* Avoid moving your head too much while you sing.
* Have fun!