Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:4/4
K:D
['DFFE F3 E DF F2', 'c3 A']  
X:1
L:1/8
M:4/4
K:D
|: DFFE F3 E | DF F2 BFAF | (3EFE DF E2 (3FGA | BF F2 BFAF | DFFE F3 E | DF F2 (3BcB AF | 
 DEFD (3EFE DE | (3FED ED Bd d2 :: c3 A BF F2 | BFdF BF F2 | c3 A BA (3FGA | Beed e3 d | 
 c3 A BF F2 | BFdF BFFE | DEFD (3EFE DE | (3FED ED Bd d2 :|  