Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
Q:1/4=120
M:2/4
K:C
['EF GG GG AG']  
X:1
L:1/8
Q:1/4=120
M:2/4
K:C
 G G G | E2 G2 | AG G2 | FF FF | D2 F2 | GF F2 | EE EF | GG GG | AG FE | E2 D2- | DE EF | GG GG | 
 AG F2 | G2 E2- |]  