Here is the full list of all 49 Band Hero trophies - there are 38 bronze, 8 silver, 2 gold and 1 platinum.
Earn all of the Bronze, Silver and Gold Trophies in Band Hero
Complete all of the tutorials
Complete 50 of the Career Challenges at Platinum or Diamond
Complete 25 online Pro Face-Off matches, win or lose
Earn 555 Stars in Career
Host an online Career game and play a song
Play an online Do or Die game
Complete a song with 4 players without any members failing on expert in Career or Quickplay
Complete a song as 4 of the same instrument on any difficulty in Quickplay or Career
Earn an 11x multiplier
Score over 1,000,000 points as a band in any single song in Career or Quickplay
Streak through an entire song without missing a note on medium or harder difficulty
Create a GH™Studio song
Play through every Band Hero song once
Complete Career on any difficulty with any instrument
Unlock every venue
Complete 75% of the gigs in Career
Complete the gigs and unlock all of the celebrity characters
Earn 333 Stars in Career
Collect all of the Secret Notes
Hint: **r* **u****
Hint: A** * A*
Hint: **ll*** ****l*
Hint: *o ***b*
Complete at least one challenge for every instrument at Gold level or better
Hint: *e*** *c******y
Complete 50% of the gigs in Career
Hint: **n** ***k***
Hint: ***o*n 5
Hint: *a* B****a*
Hint: *e***w***d
Hint: *** *ol**** ****e*
Complete 25% of the gigs in Career
Hint: **l* *ll**
Earn 111 Stars in Career
Hint: **i** *i***
Hint: *h* *ll-**e***** **j****
Hint: ***v** **y*
Hint: H*****
Hint: **l*** **ff
Hint: **y O******
Hint: **v** *o***
Earn Diamond level on a Career Challenge
Earn Platinum level on a Career Challenge
Hint: *v***s***c*
Score over 10,000 points while in a single Star Power deployment in Career or Quickplay
Successfully complete a Band Moment
Complete a Career gig on any difficulty
100% a song as a vocalist