Design a piece of music by fusing the provided alphabetic indicator and the predetermined tune.
X:1
L:1/8
Q:1/2=75
M:4/4
K:G
['G2 G2', 'dBdB e2 e2']  
X:1
L:1/8
Q:1/2=75
M:4/4
K:G
|: G,3 G G2 G2 | AGAF G2 GA | BABG cBcA | BABG FGAF | [G,G]3 G G2 G2 | AGAF G2 G2 | FGAB AGFE |1 
 D2 DE DCB,A, :|2 D4 D2 |]: dc | dcBA GFED | E2 C2 C2 ed | eded cBAG | F2 D2 D2 Bc | dBdB e2 e2 | 
 dBdB e2 e2 | dgfe dcBA | G2 B2 G2 :|  