Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
Q:3/8=120
M:6/8
K:D
['AFD DFA d2 B c2 A', 'a2 f'  
X:1
L:1/8
Q:3/8=120
M:6/8
K:D
 AFD DFA | d2 B c2 A | B3- Bcd | AFD E2 D | AFD DFA | d2 B c2 A | (B/c/d)B AFD | GEC D3 :: 
 ecA Ace | a2 f g2 e | f3- f^ga | ecA B2 A | a2 f =g2 e | (f/g/a)g f2 e | (f/g/a)f gec | d3 D3 :|  