Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:6/8
K:D
['FAA FAA dcd e2', 'f gBB BcB']  
X:1
L:1/8
M:6/8
K:D
|: FAA FAA | dcd e2 d | caa aba | ged cAG | FAA FAA | dcd e2 f | ged cag |1 fdc d2 A ||2 
 fdc d2 e :| faa aba | faa a2 f | gBB BcB | Ace aeg | faa aba | faa aef | ged cag | fdc deg | 
 faa aba | faa a2 f | gBB BcB | cBA GFEFAA FAA | dcd e2 f | ged cag | fdc d3 ||  