Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:Dmix
['A,DFA dcAG', 'D Ad d/^c/d adfa gfed ^caec d2']  
X:1
L:1/8
M:4/4
K:Dmix
|: dcAG FADF | A,DFA dcAG | Ad d/^c/d d=fed | c2 Gc EcGc | dcAG F2 D/E/F | A,DFA dcAG | 
 Add^c AdFA | GC E/F/G FD D :: Ad d/^c/d adfa | gfed ^caec | d2 AG F/G/A DG | (3EFG AB c2 Bc | 
 Add^c Ad f/e/d | ^cdef gefg | a2 ea ^caec | dcAG FD D :|  