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
['BG (3GGG', 'g3 d']  
X:1
L:1/8
M:4/4
K:G
|:"^#" BG (3GGG BGdG | BG (3GGG Bdgd | BG (3GGG dGBG | AGFG ABcd :: g3 d BGBd | g3 e fgaf |1 
 g3 d B2 dB |"^+" AGFG ABcd :|2 bgaf gedB | cBAG FGAd |:  