Full list of all 49 Band Hero achievements worth 1,000 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox 360.
Played through all the Band Hero songs once
3/4 of the way there
Grabbed 333 Career Stars
Met all of the Stars
1/2 of the way there
Scored over 1,000,000 as a band
Completed a Band Moment successfully
Found the pot of gold
Found Secret Notes 18 (Oh, Pretty Woman)
Found Secret Notes 14 (YMCA)
Found Secret Notes 13 (Wannabe)
Found Secret Notes 4 (Take What You Take)
Found Secret Notes 15 (So Yesterday)
Found Secret Notes 6 (She Will Be Loved)
Found Secret Notes 16 (Ocean Avenue)
Found Secret Notes 10 (Love is a Battlefield)
Found Secret Notes 9 (Lips of an Angel)
Found Secret Notes 19 (Kung Fu Fighting)
Found Secret Notes 12 (I Heard it Through the Grapevine)
Found Secret Notes 3 (Honky Tonk Women)
Found Secret Notes 11 (Don't Speak)
Found Secret Notes 8 (Bring Me to Life)
Found Secret Notes 2 (Black Cat)
Found Secret Notes 1 (Beautiful Soul)
Another notch on the belt
Been around the block
1/4 of the way there
FC'd it
Found Secret Notes 17 (Dirty Little Secret)
Grabbed 111 Career Stars
Found Secret Notes 7 (Let's Dance)
Earned some ice
Earned some bling
Rocked a gig
Scored over 10,000 in Star Power
Rocked out as an Avatar
Ready for my close up
Found Secret Notes 5 (Like Whoa)
My 1st hit
Got to know the new hotness
Earn 555 Stars in Career
Host an online Career game and play a song
Complete 25 online Pro Face-Off matches, win or lose
Play an online Do or Die game
Complete 50 of the Career Challenges at Platinum or Diamond
Complete at least one challenge for every instrument at Gold level or better
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