Craft a musical work adhering to the specified theme and structure.
X:1
L:1/8
M:4/4
K:Gdor
['G2 dG cFAF', 'f2 de fdcA'  
X:1
L:1/8
M:4/4
K:Gdor
|: G2 dG cFAF | GABc dfcA | G2 dG cFAF | GBAF G3 D | G2 dG cFAF | GABc defg | (3agf ge fdcA | 
 GBAF G3 z :: f2 de fdcA | G2 g^f gbag | f2 de fdcA | GBAF G3 e | f2 de fdcA | G2 g^f gbag | 
 f2 de fdcA | GBAF G3 z :|  