Assemble a musical creation that incorporates the furnished motif and conforms to the predetermined alphabetical structure.
X:1
L:1/8
M:2/4
K:G
['GA BG EG ED', 'dB GA']  
X:1
L:1/8
M:2/4
K:G
|: GA BG | EG ED | GA Bd | B2 A2 | GA BG | EG ED | BG DF | A2 G2 :: dB GA | BG ED | dB GA | B2 A2 | 
 dB GA | BG ED | BG DF | A2 G2 :|  