Create a composition using the letter notation of the specified musical motif and the provided melodic theme.
X:1
L:1/8
Q:1/4=140
M:4/4
K:G
['', 'GBdB gBdB', 'bgaf gedB']  
X:1
L:1/8
Q:1/4=140
M:4/4
K:G
 D |: GBdB gBdB | bBdB cA A2 | GBdB gBdB | ceAc BG G2 :: bgaf gedB | bgaf ge e2 | bgaf gedB | 
 ceAc BG G2 :|  