Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:3/4
K:D
['ddd ddd']  
X:1
L:1/8
M:3/4
K:D
 d6 | ddd ddd ddd | f2 a2 (3dcd | e2 g2 (3cBc | d6 | ddd ddd ddd | f2 a2 (3dcd | 
 e2 !fermata!g2 (3cBc | d6 |]  