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:D
['AGEF GFGB']  
X:1
L:1/8
M:2/2
K:D
 G3 B AGEF | GFGB d3 d | edge dBAG | GAFG EFDE | G2 GB AGEF | GFGB dGBd | e2 ge dBAG | 
 AGFA GDEF :|2 AGFA G2 Bd ||  