Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
Q:1/4=140
M:2/2
K:D
['d2 cA g2', 'D a fd a2 ec g2 fdcd', 'd3 G FDGE AFBG gefd e/d/c/B/ Ag']  
X:1
L:1/8
Q:1/4=140
M:2/2
K:D
|: G | AF d2 cA g2 | facd e/d/c/B/ AG | FD d2 cA g2 | fa Ac d2"^*" D :: a | fd a2 ec g2 | 
 fdcd e/d/c/B/ Ag | fd f/g/a ec e/f/g | fdec d3 :: G | FDGE AFBG | gefd e/d/c/B/ Ag | fdge afbg | 
 fa Ac d2"^*" D :|  