Successfully complete one of the following tasks to get a trophy:

Accurate (Bronze): Score an accuracy bonus in "Realize".
All Flaired Up (Silver): Reach Maximum Flair in "When You Look Me In The Eyes".
Banquet for Two (Bronze): Finish 10 songs in Duet mode.
BFF (Bronze): Complete "7 Things" in Single Mic Duet mode.
Bonus Guru (Bronze): Get every Bonus at least once.
Bonus Harmony (Bronze): Score a Hidden Harmony bonus in "Emergency".
Breathe Right (Bronze): Complete Topic 1 in Sing It Pro.
Consistently Awesome (Silver): Achieve or witness 10 Sing It Superstar ratings in a row on different songs, in any mode.
Curly (Bronze): Get 65% of the curved notes in "Hold On".
Dedication (Gold): Finish 100 songs in any mode.
Enhanced (Bronze): Use Sing It Encore and enhance "Get Back".
Explorer (Bronze): Finish a song in every mode at least once.
Get Style (Bronze): Win some Flair in "Fly On The Wall".
Harmonize (Bronze): Find a Hidden Harmony in "I'm Only Me When I'm With You".
Harmonizer (Silver): Complete 60% of Hidden Harmonies where songs have them.
Harmony Hunter (Bronze): Find 50% of the Hidden Harmonies in "S.O.S.".
Lip Sync (Bronze): Get all the spoken words spot on in "Hoedown Throwdown".
Long Note (Bronze): Hold a note for 5 seconds in "Warwick Avenue".
Master of All (Silver): Complete all Sing It Pro lessons with a Pro rating.
Master of Many (Bronze): Complete the Sing It Pro Masterclass.
Master of Some (Bronze): Unlock Topic 5: Masterclass.
Millionaire (Silver): Score 1,000,000 or more in "lt's Amazing".
Multi-Millionaire (Gold): Accumulate a total of 100,000,000 points in Solo mode.
Name in Lights (Bronze): Get on the high score table on every song.
Natural Flair (Silver): Achieve at least 50% Flair in every song.
Note Pro (Bronze): Complete Topic 2 in Sing It Pro.
Number 1 (Bronze): Get to number one on the high score table with "Change".
On Your Own (Bronze): Play "La La Land" in You're On Your Own! mode.
On Your Own Score (Bronze): Score 250,000 points in You're On Your Own! mode during "The Climb".
Party Planner (Bronze): Finish all 30 songs in multiplayer mode.
Pure Talent (Bronze): Score a Pure Pop Star or better in "Sneakernight".
Raise The Bar (Silver): Successfully predict 700,000 points or more on "7 Things".
Riding the Waves (Bronze): Get 90% of the curved notes in "Get Back".
Riff Rider (Bronze): Complete Topic 4 in Sing It Pro.
Secrets Revealed (Bronze): Get a Harmony Bonus in every song that has Hidden Harmonies.
Shining Showdown (Silver): Reach a combined total of 7,000,000 points in a single multi-round, multiplayer game.
Showdown Shakedown (Bronze): Finish "Violet Hill" in 2P Showdown mode.
Sing It All (Platinum): Win all pins and ribbons.
Sing It Better (Bronze): Pass 2 Lessons in Sing It Pro.
Sing It Superstar (Bronze): Achieve Sing It Superstar ratings on at least 10 songs.
Song Book (Bronze): Sing all 30 songs in any mode.
Such Flair (Bronze): Reach 50% Flair in "Lovebug".
Super Duo (Bronze): Sing "Hold On" in Duet mode and get a Sing It Superstar rating.
Superstardom (Bronze): Get a Sing It Superstar rating in "Don't Forget".
Tag (Bronze): Tag 10 songs as favorites.
Tag Team (Bronze): Complete Topic 3 in Sing It Pro.
The Big Reveal (Silver): Find 80% of the Hidden Harmonies in "How Do You Sleep?".
Tough Time (Bronze): Play "Burnin' Up" on the hardest difficulty level.
Up on High (Bronze): Get on the high score table with "Bubbly".
Wrap it Up (Bronze): Score some rap points in "Sneakernight".