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
['GAG GAB ded dBG BAB GED', 'G3 def g2 e f2 d e2']  
X:1
L:1/8
M:6/8
K:G
 GAG GAB | ded dBG | BAB GED | E2 E E2 D | GAG GAB | ded dBG | BAB GED | E3 G3 :: def g2 e | 
 f2 d e2 c | def gfe | fed e3 | def gag | fed efg | dBG GAB | ded dBG | BAB GED | E3 G3 :|  