Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/16
M:2/4
K:D
['A2[df]2 [df]d[df]d A2[df]2 [df][df][df][df]']  
X:1
L:1/16
M:2/4
K:D
 =f2 |"D" fafe d2B2 |"A" c2(e2 e2>)e2 |"G" gage"A7" B2c2 |"D" d2>e2 d2=f2 |"D" fafe d2B2 | 
"A" c2(e2 e4) |"G" gage"A7" B2c2 |"D" d2>d2 d2B2 ||"D" A2[df]2 [df]d[df]d | 
"D" A2[df]2 [df][df][df][df] |"A" A2[ce]2 [ce][ce][ce][ce] |"A" A2[ce]2 [ce][ce][ce][ce] | 
"D" A2[df]2 [df]d[df]d |"D" A2[df]2 [df][df][df][df] |"G" gfec"A" A2c2 |"D" d2>e2 d2 ||  