Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:6/8
K:D
['F2 G A2 d', 'e2 d']  
X:1
L:1/8
M:6/8
K:D
 F2 G A2 d | F2 G A2 d | B2 B e2 d | ced cBA | F2 G A2 d | F2 G A2 d | B2 e{d} cBc | d3- d3 || 
 e2 d c2 f | e2 d c2 f | e2 d c2 B | BAA A2 f | e2 d c2 f | e2 d c2 f | efd cdB | ABG FGE | 
 F2 G A2 d | F2 G A2 d | B2 B e2 d | ced cBA | F2 G A2 d | F2 G A2 d | Bed{d} cBc | d3- d3 ||  