Generate a musical piece using the presented motif and follow the alphabetical structure provided.
X:1
L:1/8
M:4/4
K:G
['GABc dBeB dgfg bgdB cAdc', 'defg afbg afge dgdB AcBA GABc dBeB']  
X:1
L:1/8
M:4/4
K:G
|: GABc dBeB | dgfg bgdB | cAdc BGdB | ABGE DcBA | GABc dBeB | dgfg bgdB | cAdc BGAF |1 
 GBAF GDEF :|2 GBAF G2 fg |: ag f2 defg | afge defg | afbg afge | dgdB AcBA | GABc dBeB | 
 dgfg bgdB | cAdc BGAF |1 GBAF G2 fg :|2 GBAF G4 ||  