Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:6/8
K:D
['A2 D- DFD DFD B2 A Bcd', 'g (fef) d2 e fga B2 A']  
X:1
L:1/8
M:6/8
K:D
 d | A2 D- DFD | DFD B2 A | Bcd AFA | BGE E2 B | A2 D- DFD | DFD B2 A | Bcd AFd | AFD D2 :| g | 
 (fef) d2 e | fga B2 A | Bcd AFA | BGE E2 g | (fef) d2 e | fga B2 A | Bcd AFB | AFD D2 g | 
 (fef) d2 e | fga B2 A | Bcd AFA | BGE Egb | agf gfe | fed edc | dcB AFd | AFD D2 ||  