Create a musical composition that adheres to the provided structure and theme.
X:1
L:1/4
M:6/4
K:D
['d2 e', 'f e3/2 d/ c'  
X:1
L:1/4
M:6/4
K:D
 A | d2 e f2 g | a3 b3 | a3/2 g/ f e2 f | g3 f3 | e3/2 d/ c d2 e | A3- A2 :: f | e3/2 d/ c d2 e | 
 e3- e2 f | e3/2 d/ c d2 e | a3- a2 f | e3/2 d/ c B2 c | d2 e f2 b | a b f e2 d | d3- d2 |]  