Develop musical compositions in line with the specified format and incorporating the provided musical theme.
X:1
L:1/4
M:3/4
K:D
['a a', 'e e'  
X:1
L:1/4
M:3/4
K:D
 a a a | f d/e/f/d/ | g g g | a a a | f d f | g3 :: e e e | c A/B/c/A/ | d d d | e e e | 
 c A/B/c/A/ | d2 D :|  