Develop a piece of music by incorporating the provided motif and following the outlined musical structure represented by alphabet characters.
X:1
L:1/8
M:4/4
K:G
['B2 cBAG FGAF GABG', 'cBcd e4 g4 agfe defd']  
X:1
L:1/8
M:4/4
K:G
 B2 | cBAG FGAF | GABG A2 D2 | F2 D2 F2 A2- | A2 B2 cBAG | FGAF GABG | ABcd B2 G2 | G3 :: B2 | 
 cBcd e4 | g4 agfe | defd efge | a2 A2 A3 B | cBcd e4 | g4 agfe | defd ABcd | B2 G2 G2 :|  