Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/8
Q:3/8=95
M:6/8
K:Dmix
['e2 c e2', 'a gfe dcB def gdB A>BA A2']  
X:1
L:1/8
Q:3/8=95
M:6/8
K:Dmix
 g/f/ |"G" edc BAG | B>cB Bgf | edc BAG |"D" A>BA Agf |"G" edc BAG | B>cB B2 c | def gdB | 
"D" A>BA A2 :: B/c/ |"G" d2 B d2 B | d2 B dgf |"C" e2 c e2 c | e2 c e2 f |"G" g2 a b2 a | gfe dcB | 
 def gdB |1"D" A>BA A2 :|2"D" A>BA"G" G2 |]  