Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:4/4
K:G
['', 'd3 B', '(3ccc dc'  
X:1
L:1/8
M:4/4
K:G
 dc |: BGGB (3DDD DG | BGB^c d3 B | cAAd FAAG | FDFA edcd | BGGB DGGA | (3BAG B^c d3 B | 
 cedc B^cdB |1 AGFA GDdc :|2 AGFA GABd |: gzgf d^cdf | g3 a bgag | faaf dfaf | Adfg agf=f | 
 (3eee ge dfgf | efge dcBd |1 (3ccc dc B^cdB | AGFA GABd :|2 (3ccc dc B^cd z | 
 !>!DD z !>!DD z dc ||  