Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:6/8
K:G
['GDG BGB dBd g3', 'dBG ecA dBG AFD'  
X:1
L:1/8
M:6/8
K:G
|: GDG BGB | dBd g3 | ded dcB | ABA AFD | GDG BGB | dBd g3 | faf gec | d3 D3 :: dBG ecA | dBG AFD | 
 dBG efg | ABA AFD | dBG ecA | dBG AFD | efg gfe | DGG G3 :|  