Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:4/4
K:G
['D G3 DGBc dBeB dBAF G B3', 'B3 eBdB AcBG'  
X:1
L:1/8
M:4/4
K:G
|: D G3 DGBc | dBeB dBAF | G B3 eBdB | AcBG AGEG | D G3 DGBc | dBeB dBAF | G B3 eBdB | 
 AcBG AG G2 :: d g3 dgbg | gbaf gedg | e B3 eBdB | AcBG AGEG |1 d g3 dgbg | gbaf gedg | e B3 eBdB | 
 AcBG AG G2 :|2 D G3 DGBc | dBeB dBAF | G B3 eBdB | AcBG AG G2 ||  