Craft a musical work adhering to the specified theme and structure.
X:1
L:1/8
M:2/4
K:G
['GD G>B AD Ac B/c/d', 'Ac B/c/d'  
X:1
L:1/8
M:2/4
K:G
|: GD G>B | AD Ac | B/c/d Bd | Bd cA | GD G>B | AD Ac | B/c/d cA |1 AG G>A :|2 AG GB |: A2 A>B | 
 cB Ac | B/c/d Bd | Bd cB | A2 A>B | cB Ac | B/c/d cA |1 AG GB :|2 AG B>A ||  