Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Crooner (50 points)	Sing the lead lyrics on 10 songs to 80 percent accuracy on medium difficulty.
Easy Listening (30 points)	Sing the lead lyrics on 10 songs to 70 percent accuracy on easy difficulty.
Flawless Voice (50 points)	Complete a chain of 10 flawless lines.
Golden Disc (100 points)	Reach 200 golden notes.
Karaoke Kid (20 points)	Complete one song in Karaoke mode singing lead lyrics.
Know your Song (20 points)	Complete a song to 50 percent singing lead lyrics.
Lets get started (20 points)	Complete any song in Party mode.
Marathon (50 points)	Complete 15 songs singing lead lyrics.
Mr Consistent (50 points)	Complete 20 song lines without an X note.
Party On (20 points)	Red or Blue team wins.
Perfect Harmony (100 points)	Complete all songs with a lead & backing singer.
Pitch Perfect (50 points)	Complete a song to 100 percent singing lead lyrics.
Practice makes Perfect (20 points)	Rehearse any section of a song.
Pure Talent (30 points)	Complete a song with 3 thumbs up.
Road to Fame (50 points)	Complete round 5 in Group mode.
Screamer (80 points)	Sing the lead lyrics on 10 songs to 90 percent accuracy on expert difficulty.
Superstars (120 points)	Complete Group mode.
Teamwork (20 points)	Complete one song with a lead & backing singer.
Tiny Voice (20 points)	Sing the lead lyrics on 10 songs to 40 percent accuracy on easy difficulty.
Wedding Singer (40 points)	Sing the lead lyrics on 10 songs to 50 percent accuracy on medium difficulty.
Yodeller (60 points)	Sing the lead lyrics on 10 songs to 60 percent accuracy on expert difficulty.