Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:4/4
K:D
['FAAB AFED FAAB A2 de fBBA', 'D3 e faag fdde fdad fd d2']  
X:1
L:1/8
M:4/4
K:D
 E | FAAB AFED | FAAB A2 de | fBBA Bcde | fdgf efdB | FAAB AFED | FAAB A2 de | fBBA BcdB | 
 AFEF D3 :| e | faag fdde | fdad fd d2 | efga beef | gebe ge e2 | faaf b2 af | defd e2 de | 
 fBBA BcdB | AFEF D3 :|  