Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:4/4
K:Amix
['a2 fa', '(3cBA eA'  
X:1
L:1/8
M:4/4
K:Amix
|: a2 fa eA A2 | cAeA cA A2 | a2 fa cA A2 | Bcdc BG G2 | a2 fa eA A2 | (3Bcd ef g2 fg | afge fded | 
 Bcdc BG G2 :: (3cBA eA fAeA | (3cBA eA cA A2 | (3cBA eA fAeA | Bcdc BG G2 | (3cBA eA fAeA | 
 (3Bcd ef g2 fg | af (3gfe fded | Bcdc BG G2 :|  