Assemble a musical creation that incorporates the furnished motif and conforms to the predetermined alphabetical structure.
X:1
L:1/8
M:2/2
K:Dmix
['dcAB c2 cA GEED cBce dcAB', 'D2 Adde fded cBca gece d^cde ed']  
X:1
L:1/8
M:2/2
K:Dmix
 dcAB c2 cA | GEED cBce | dcAB cBcA | GEcE ED D2 | dcAB c2 cA | GEED cBce | dcAB cded | 
 cAGE ED D2 :: Adde fded | cBca gece | d^cde ed (3Bcd | e2 ag edcA | d^cde fded | cBcd ef g2 | 
 afge (3Bcd ed | cAGE ED D2 :|  