Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:6/8
K:G
['GAB A{B}GE', 'd2 g'  
X:1
L:1/8
M:6/8
K:G
|: DGG GAB | A{B}GE GED | EAA ABd | e/f/ge dBG | DGG GAB | A{B}GE GBd | e2 g d2 g |1 GAB A{B}GE :|2 
 GAB A2{B} G |: Bdd dB/c/d | edB dBG | Bdd dBG | DEG A2{B} G | Bdd dB/c/d | edB d2 g | e2 g d2 g | 
 GAB A2{B} G :|  