Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:2/2
K:D
['F2 FA AFED', 'e>f eA e2 e2'  
X:1
L:1/8
M:2/2
K:D
 F2 FA AFED | d2 df fe eA | F2 FA AFED | a2 f>e d4 |] e>f eA e2 e2 | e>f eA e2 e2 | a>b aB a2 a2 | 
 a>b aB a2 a2 |]  