Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Beautiful Harmony ( 20 points )	Score over 750,000 on any song in Duet mode.
Best Of Both ( 30 points )	Complete all Hannah Montana & Miley Cyrus songs.
Big Stake Battle ( 20 points )	Score over 750,000 on any song in Versus mode
Bop To The Top ( 50 points )	Get the top score on any song.
Dynamic Duet ( 50 points )	Complete every song in the tracklist in Duet mode
In This Together ( 10 points )	Complete a song in Duet mode.
Head To Head ( 10 points )	Complete a song in Versus mode.
Hey! Big Scorer ( 100 points )	Score over 750,000 on 20 songs.
Natural Performer ( 50 points )	Hit 75% of the notes of any song in You're On Your Own mode.
Party Starter ( 10 points )	Complete a song in Team Play mode.
Perfect Team ( 100 points )	Score over 1,000,000 in a duet.
Pushin' It To The Limit ( 50 points )	Hit a X4 multiplier.
Rackin' Up The Points ( 30 points )	Score over 750,000 on 10 songs.
Sing It Fanatic ( 50 points )	Complete 50 songs.
Sing It uber-fan ( 100 points )	Complete 100 songs.
Sing it Superstar ( 50 points )	Complete every song in the tracklist in Solo mode.
Singing Without A Net ( 10 points )	Complete a song in You're On Your Own mode.
Show Time Double ( 10 points )	Perform a gig with 2 players.
Show Time ( 10 points )	Perform a solo gig.
Top Billing ( 20 points )	Score over 750,000 on any song in Solo mode.
Vocal Pro ( 10 points )	Complete all the lessons in Sing It Pro.
You've Got The Music In You! ( 30 points )	Complete all High School Musical songs.
You Rock! ( 30 points )	Complete all Camp Rock songs.
You're a Professional! ( 100 points )	Score over 1,000,000 on any song in Solo mode.
You Got What It Takes ( 50 points )	Score over 500,000 on 20 songs.