Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:6/8
K:D
['F2 EFE', 'fdB ABd faa afa']  
X:1
L:1/8
M:6/8
K:D
"^A" |:"D" F2 F"A" EFE |"D" DFA BAF | ABd ede |"Bm" fdB"A" AFE |"D" F3"A" EFE |"D" DFA BAF | 
"G" AdB AFE |"A" FDC"D" D3 :|"^B" |:"D" fdB ABd | faa afa |"Em" g3 fed |"A" Bee efg |"D" fdB ABd | 
 faa afa |"G" baf gfe |"A" fdc"D" d3 :|  