Create musical compositions adhering to the given structure and incorporating the provided musical concept.
X:1
L:1/4
Q:3/4=90
M:6/4
K:D
['d2 a f2 b a d2 c2', 'a f'  
X:1
L:1/4
Q:3/4=90
M:6/4
K:D
 d2 a f2 b | a d2 c2 f | e c2 B2 A |1 A3- A3 :|2 A3- A2 || a | a3/2 g/ a b2 a | f d2 B2 f | 
 g3/2 a/ g f3/2 e/ d | e3/2 f/ e c3/2 B/ A | F G A B c d | e2 e e3/2 f/ g | a f g e2 d | d3- d3 |]  