Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
M:6/8
K:C
['cGE cGE EDE CEG', 'g>ag ged ecc cde']  
X:1
L:1/8
M:6/8
K:C
 e/d/ | cGE cGE | EDE CEG | cGe cGE | Add ded | cGE cGE | EDE CEG | cee e2 d | cAA A2 :: z | 
 g>ag ged | ecc cde | aba age | edd d2 e | g>ag ged | ecc cde | fed fed | ecA A2 :|  