Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:6/8
K:Edor
['GBG FAF E2 B BAB', 'FED GAB d3 edB']  
X:1
L:1/8
M:6/8
K:Edor
 GBG FAF | E2 B BAB | GAG FGF | DFA AFD | GBG FAF | E2 B BAB | GAB dBG | ABG FED :: GAB d3 | 
 edB dBA | GAB dBG | ABG FED | GAB d3 | edB def | gfe dBG | ABG FED :|  