Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/4
M:none
K:A
['d d']  
X:1
L:1/4
M:none
K:A
 A | =c c d d | e2 e2 z e | =g g =f f | e2 d2 z d | e e e e | =f2 e2 z e | d =c d/ e d/4c/4 | 
 B2 A2 z e | d B =c A | B A =G2 z d | d d d e | =f2 e2 z e | d =c d/ e d/4c/4 | B2 A2 |]  