There are 48 Trophies that can be earned in this title.

Bronze

Vocal Score
Complete the Scoring Tips lesson with at least a silver cup.

Vocal Power
Complete all Power Singing lessons with at least a gold cup.

Riffin' Star
Complete all Riffing lessions with a Superstar rating.

Curvy Notes
Sing 80% of curved notes correctly in 'Ignorance'.

Word Master
Correctly hit 80% of the spoken words in 'It's On'.

Note Expert
Successfullly sing the longest note in 'I Wouldn't Change A Thing'.

Paramore Pro
Sing both 'Paramore' songs.

That's Punk
Apply the 'Pop Punk' theme.

Billboard
Get on the Score Board with 'Brick By Boring Brick'.

Paramore Star
Achieve at least a 4 Star rating in both 'Paramore' songs.

Stylin' Success
Hit level 5 Style in 'Already Gone'.

Performer
Score at least 750,000 while singing 'I'm Yours' in Performance Mode.

Solo Success
Sing every song on the disc while playing a Solo game.

Team Up!
Sing 'Boom Boom Pow' in a Team game.

Pass The Mic
Sing 'It's Alright, It's Ok' in a Pass The Mic game and achieve a 3 star rating.

High Five
Get a Gold bonus in 5 songs during a Sing Off game.

The Final Jam
Sing every 'Camp Rock 2' song.

Bonus
Get a Bronze bonus in 'Fire'.

Rock!
Get on the Score Board with every 'Camp Rock 2' song.

Rock Star
Achieve a 3 Star rating in the hardest difficulty for every 'Camp Rock 2' song.

Me To You
Sing 'Remember December' in a Pass The Mic Game.

Awesome Co-op
Get 70 Awesome bonuses while playing any co-operative games.

$1m Bussides
Sing 'One Time' and achieve a combined score of 1,000,000 during a Duet.

Showdown
Sing 'Naturally' in a Competition.

Great
Get 250 'Great' bonuses while playing competitively against other players.

Party Millionaire
Score 1,000,000 or higher while singing 'Fireflies' in a Competition.

Jonas fan
Sing every 'Jonas Brothers' song.
Bonus Skill
Get a Silver bonus in 'Paranoid'.

Chart Hit
Reach the top spot on the Score Board with 'Fly With Me'.

Living the Dream
Achieve a 5 Star rating for every 'Jonas Brothers' song.

Awesome Bonus
Get 10 Awesome bonuses in any 5 songs.

Z Mode
Finish a song in every game mode.

Baby
Sing every 'Justin Bieber' song with at least a 3 star rating.

Gold Status
Get a Gold bonus in 'One Less Lonely Girl'.

Chart Topper
Reach the top spot on the Score Board in every 'Justin Bieber' song.

Justin's World
Achieve a 5 Star rating in the hardest difficulty for every 'Justin Bieber' song.

Silver

Singing Star
Get a Superstar rating for all lessons in Vocal Coach.

Super Star
Achieve a 5 Star rating in any 15 songs while playing in a Solo game.

Sing Off
Sing 10 songs with a 5 star rating while competing in a Sing Off.

Top 5 Duo
Win 4 stars or more in any 10 duets.

Silver Winner
Win a silver bonus in 10 competitive Performance games.

Style Pro
Achieve the maximum Style level in 10 songs.

Bling
Get a Gold bonus in every song on the disc.

Supermassive Star
Sing 200 Songs with at least 3 star rating.

Gold

Jackpot
Earn 150,000,000 total points throughout the game.

Bonus Expert
Achieve a 5 Star rating for every song on the disc.

Billboard Star
Reach the top spot on the Score Board for every song on the disc.

Platinum

All-Star
Win every other award in the game.

http://www.ps3trophies.org/game/disney-sing-it-party-hits/trophies/