Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:4/4
K:G
['', 'B2 BA GBdB c2 cB ABcd', 'ABcd f2 fe dfaf gfga gdBd g2']  
X:1
L:1/8
M:4/4
K:G
 dc |: B2 BA GBdB | c2 cB ABcd | f2 fe dfaf | gfga gedc | B2 BA GBdB | c2 cB ABcd | fgfe dcBA |1 
 G2 B2 GB dc :|2 G2 B2 G2 Bd |: g2 ga gdBd | c2 cB ABcd | f2 fe dfaf | gfga gdBd | g2 ga gdBd | 
 c2 cB ABcd | fgfe dcBA |1 G2 B2 G2 Bd :|  