Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:2/2
K:D
['fd d2 fgaf']  
X:1
L:1/8
M:2/2
K:D
"D" d2 AG FGAB |"C" =c2 AB cdec |"D" dcAG FG A2 |"D" fa"A"ge"D" d2 fe :|"D" fd d2 fgaf | 
"C" e=c c2 efge |"D" fd d2 fgaf |"A" edcB A3 e |"D" f a2 f a4 |"G" gbaf g2 fg |"D" a2 ag fgfe | 
"A" dede fafe |]  