Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:4/4
K:D
['', 'DF F2', 'Ad d2'  
X:1
L:1/8
M:4/4
K:D
 FE || DF F2 EFDF | Adfd edBA | DF F2 EFDA | BAGF EA,CE | DF F2 EFDF | Adfd edBf | abaf gfec | 
 dBAG FGEF :: dfaf g2 fg | afdf edcB | Ac c2 BcAB | Ad d2 efge | a2 af g2 ge | dfed =cAGE | 
 Ad d2 =cAdB | =cAGE ED D2 :|  