Design a piece of music by fusing the provided alphabetic indicator and the predetermined tune.
X:1
L:1/8
M:4/4
K:G
['A G']  
X:1
L:1/8
M:4/4
K:G
 G G/A/ B A | G .D | B B/c/ d c/B/ | A G G A G A B c B A G F E E D | d | e d c B | c3 d | e d c B | 
 c3 B | c B A G | F E x2 |]  