Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
M:4/4
K:G
['dGBG ABcA', 'G3 B ddde fdec dggf g2 ag']  
X:1
L:1/8
M:4/4
K:G
|: B | dGBG ABcA | dGBG c2 Bc | dGBG ABcA | dBcA G3 :: B | ddde fdec | dggf g2 ag | fd d2 ec c2 | 
 dBcA G3 :|  