Found this great resource n LOTR forums compiled by Calenyavie.

Song Compilation
This thread will (hopefully) be your source for instructions on how to play songs in game. This post will be updated with new song as they are posted, I will do my best to keep it up to date. If you have a request or submission, post it below. Print these out for easy access when in-game.

I use and recommend Psomm's keymapping:

QWERTYUI = Note 1 thru 8 (This is the low octave C to C)
ASDFGHJK = Note 17 thru 24 (This is the high octave C to C)
123 = Note 9,10,11 (This is low B and low octave black keys C# and D#)
567 = Note 13,14,15 (this is low octave F#, G#, and A#)

Sweet Child of Mine - Guns N Roses (a personal favorite)
compiled by LordAngus
INTRO
1 8 5 4 S+4 5 S+3 5
1 8 5 4 S+4 5 S+3 5
2 8 5 4 S+4 5 S+3 5
2 8 5 4 S+4 5 S+3 5
4 8 5 4 S+4 5 S+3 5
4 8 5 4 S+4 5 S+3 5
S+2 5 S+1 5 S+2 5 S+3 5 S+4 5 S+3 5 S+2 5

Fade to Black
compiled by LordAngus
(up a few steps for easier playing)
2 6 C7 6 2 6 4 6
1 6 C7 6 1 6 4 6
2 6 C7 6 2 6 4 6
1 6 C7 6 1 6 4 6
3 5 8 5 3 5 1 5


for those who don't know
play all from ||: to :|| then go back to ||: and play to ||


If any of you cant access the thread for any reason, please let me know,and I will pm you / or postthe rest here