Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:6/8
K:G
['AGA GAG GBd', 'd efg fga ded dcB edc BAG']  
X:1
L:1/8
M:6/8
K:G
 (d/c/) | BcB AGA | GAG GBd | edd gdB |{c} BAG A2 (d/c/) | B2 B AGA | GAG GBd | e>fg faf | 
 gag g2 :| | d | efg fga | ded dcB | edc BAG |{c} BAG A (d/c/) | BcB AGA | GAG GBd | e>fg faf | 
 gag g2 :|  