Craft a musical work adhering to the specified theme and structure.
X:1
L:1/8
M:6/8
K:G
['GBA BGE GAG GBd efg', 'G2 B ded def gag fed efg'  
X:1
L:1/8
M:6/8
K:G
 D2 | GBA BGE | GAG GBd | efg edB | BAA (A2 B) | GBA BGE | GAG GBd | efg ed(_B | A)GG G2 :: B | 
 ded def | gag fed | efg edB | BAA (A2 B) | GBA BGE | GAG GBd | efg ed(B | A)GG G2 :|  