Develop a musical piece using the given motif and adhere to the outlined structure.
X:1
L:1/8
Q:3/8=120
M:6/8
K:D
['A2 a g2 f e2 d cde', 'F2 A D2'  
X:1
L:1/8
Q:3/8=120
M:6/8
K:D
 A2 a g2 f | e2 d cde | f2 d faf | e3 c3 | A2 a g2 f | e2 d cde | fdf ece | d3 D3 :| F2 A D2 d | 
 F2 A D2 g | f2 d faf | e3 E3 | F2 A D2 d | F2 A D2 g | fdf ece | d3 D3 :|  