Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/8
M:6/8
K:G
['ABc BAG', 'gdd gdd']  
X:1
L:1/8
M:6/8
K:G
 BAG G2 D | G3 ABc | BAG edc | B/c/dB cBA | BAG GDG | GDG ABc | BAG edB | def g3 :: gdd gdd | 
 gdd dcB | Acc Acc | Acc cBA | B3 cdc | BAG Fdc | BAG edB | def g3 :|  