Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
M:2/2
K:G
['Bc dedc BcBA GFGD EDB,D', 'G2 cB ABAG FGAB cBce defg afge']  
X:1
L:1/8
M:2/2
K:G
 Bc | dedc BcBA | GFGD EDB,D | cBce dBgB | AGAB A2 Bc | dedc BcBA | GFGD EDB,D | Ggfe dcBA | 
 G2 G2 G2 :: cB | ABAG FGAB | cBce defg | afge fdec | dcde dcBc | dcBd cBAc | BAGF GABc | 
 dgfe dcBA | G2 G2 G2 :|  