Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:2/2
K:A
['fg a2 g2 f2 e2 c3 d', 'f2 e6 ce fgfe dcBA BcBA F2']  
X:1
L:1/8
M:2/2
K:A
 fg |"A" a2 g2 f2 e2 | c3 d cBAB | cBcd cB A2 |"D" F6 Bc ||"Bm" d2 c2 B A3 |"E" B3 c B2 FA | 
 BcBA FEFG |"A" A4- A2 :: A,2- ||"A" A,2 A,A, A,2"D" F2 |"A" E3 F E2"E" (3EFG |"A" A2 AA A2"D" f2 | 
"A" e6 ce ||"D" fgfe dcBA |"Bm" BcBA F2 FA |"E" BcBA FEFG |"A" A4- A2 :|  