Assemble a musical creation that incorporates the furnished motif and conforms to the predetermined alphabetical structure.
X:1
L:1/8
Q:1/4=160
M:6/8
K:G
['GAB GAB cBA B3/2 z/ GAB dcB']  
X:1
L:1/8
Q:1/4=160
M:6/8
K:G
|: GAB GAB | cBA B3/2 z/ | GAB dcB | cAA A3/2 z/ :|  