Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:4/4
K:C
['BGA B2 d cAG A2', '', 'fdc BAB']  
X:1
L:1/8
M:4/4
K:C
[M:6/8][K:G] .abc d/c/ | BGA B2 d | cAG A2 B | cAF G2 B | def gdc | BGA B2 d | cAG A2 c | 
 (B/c/d)B cAF | AGG G2 || |: d | (g/f/e)g fdc | BAB dBG | gag fdc | BAB def | (g/f/e)g fdc | 
 BAB dBG | (B/c/d)B cAF | AGG G2 :|  