Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:3/4
K:D
['d f']  
X:1
L:1/8
M:3/4
K:D
 A F A d A F | d A d f d A | f d f a g f | e3 d e2 | A F A d A F | d A d f d A | f d f a g f | 
 e3 d d2 | A F A d A F | d A d f d A | f d f a g f | e3 d e2 | A F A d A F | d A d f d A | 
 f d f a g f | e3 d d2 | e c/ d/ e c A e | f d/ e/ f d f a | ^g2 e2 g a | a3 ^g a2 | 
 a a/ g/ f a f d | f f/ e/ d f d B | d f e a g f | e3 d d2 | e c/ d/ e c A e | f d/ e/ f d f a | 
 ^g2 e2 g a | a3 ^g a2 | a a/ g/ f a f d | f f/ e/ d f d B | d f e a g f | e3 d d2 ||  