Create a composition using the letter notation of the specified musical motif and the provided melodic theme.
X:1
L:1/8
M:6/8
K:G
['GBA G2 B', 'ded dcB']  
X:1
L:1/8
M:6/8
K:G
 D | GBA G2 B | def gdB | GBA G2 B | AFD AFD | GBA G2 B | def gfg | ecA dBG | FEF G2 :: B | 
 ded dcB | def gdB | ded dcB | AFD AFD | ded dcB | def gfg | ecA dBG | FEF G2 :|  