Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
Q:3/8=120
M:6/8
K:G
['A B2 G']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:G
 G2 A B2 G | c2 A B2 G | BdB AGF | E3 E3 | G2 A B2 G | c2 A B2 G | BdB AFA | D3 D3 |:  