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
['Bcd def gfg', 'D3 dBd dBd ece gfe fdf gdB']  
X:1
L:1/8
M:6/8
K:G
|: Bcd def | gfg dBG | gfg dcB | ecA ABc | Bcd def | gfg bag | fga AB^c | d3 D3 :: dBd dBd | 
 ece gfe | fdf gdB | ABG AFD | Bcd def | gfg cde | dcB AGF | G3 G3 :|  