Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/8
Q:1/4=130
M:2/4
K:G
['G3 A G2 (AB) B2- B z', '', '(d2 B2)']  
X:1
L:1/8
Q:1/4=130
M:2/4
K:G
 G3 A | G2 (AB) | B2- B z | (B2 d) d | (d>c) (c>B) | B2- B z |: |: (GB) B2 | (Bd) d2 | (d2 B2) | 
 (d2 B2) | (Ac e) d | c2 (A>B) B2- B z :|  