Compose a piece adhering to the given musical structure and theme.
X:1
L:1/4
Q:3/4=100
M:6/4
K:D
['f d e', 'd e'  
X:1
L:1/4
Q:3/4=100
M:6/4
K:D
 d | d f d e g B/c/ | d c3/2 B/ A2 g | f3/2 e/f/g/ a f d | e c A d2 :: d | e f2 e g2 | 
 d c3/2 B/ A2 g | f3/2 e/f/g/ a f d | e c A d2 :|  