Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
Q:3/8=100
M:6/8
K:D
['D DEF EFD DFA AFA Bcd def', 'e fed', 'e fdf ece dBd AFA DFA'  
X:1
L:1/8
Q:3/8=100
M:6/8
K:D
 D | DEF EFD | DFA AFA | Bcd def | gee e2 D | DEF EFD | DFA AFA | Bcd def | fdd d2 :: e | fed faf | 
 faf fdA | AFA def | gee e2 e | fed (3f/g/a/a | (3f/g/a/a fdA | AFA dge | fdd d2 :: e | fdf ece | 
 dBd AFA | DFA dfa | gee e2 e | fdf ece | dBd AFA | DFA Bge | fdd d2 :|  