Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:4/4
K:D
['A2 AB AFDF G2 BG dGBG ABAF', 'D2 ABde f2 fd g2 ge fedB']  
X:1
L:1/8
M:4/4
K:D
|: A2 AB AFDF | G2 BG dGBG | ABAF DFAF | GBAG E2 D2 :: ABde f2 fd | g2 ge fedB | ABde fefa | 
 gfdf e2 d2 :|  