Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/4
M:3/4
K:D
['d e']  
X:1
L:1/4
M:3/4
K:D
 d d e | c3/2 d/ e | f f g | f3/2 e/ d | e d c | d3 | a a a | a3/2 g/ f | g g g | g3/2 f/ e | 
 f g/f/e/d/ | f3/2 g/ a | (3b/a/g/ f e | d3 |]  