Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
Q:1/2=90
M:4/4
K:D
['fafd dcBA', 'bgbg fedc'  
X:1
L:1/8
Q:1/2=90
M:4/4
K:D
 A | dAFA dfed | ecAc egfe | fafd gbae | fafd dcBA | dAeA fAeA | fafd dcBA | bgbg fedc | 
 d2 d2 d2 z :: fg | afaf dfaf | bgbg fedc | dfaf gbge | fafd dcBA | dAeA fAeA | fafd dcBA | 
 bgbg fedc | d2 d2 d2 :|  