Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:6/8
K:D
['FDF ABc', 'gfg aba', 'AFD DBc'  
X:1
L:1/8
M:6/8
K:D
 (A/G/) | FDF ABc | dfd ecA | FDF ABc | dcA GAG | FDF ABc | dfd ece | fdf gec | Add d2 :: e | 
 fdf gfg | aba gfe | fdf gfg | aba gfg | aba gag | fgf ecA | fdf gec | Add d2 :: (c/B/) | AFD DBc | 
 dfd cBc | AFD DBc | dcA GcB | AFD DBc | dfd ecA | fdf gec | Add d2 :|  