Design a piece of music by fusing the provided alphabetic indicator and the predetermined tune.
X:1
L:1/8
M:4/4
K:C
['B2 B2 AG']  
X:1
L:1/8
M:4/4
K:C
[M:3/4][K:G] ABC ave[Q:1/8=100]"^andantino" GA | B2 B2 AG | G2 G2 ag | e2 e2 ed | B2 B2 AG | 
 E2 A2 AB | A4 ga | b2 ag ed | e4 ef | g2 g2 b2 | a2 ba gf | g2 ag fe | d2 B2 d2 | e2 g2 G2 | 
 B2 B2 AG | E2 A2 AB | A6 |]  