Compose music that adheres to the provided musical structure and theme.
X:1
L:1/4
M:4/4
K:G
['G D B, D']  
X:1
L:1/4
M:4/4
K:G
 D | G D B, D | [FA]3 [FA] | [DG] [CF] [DG] [FA] | [GB]3 [GB] | A A B G | [FA] [DF] D [CE]/F/ | 
 G D B, D | B,3 D3 G3 :|  