Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
M:4/4
K:D
['af (3gfe fdec dcAG', 'D2 DE =F2 FE FGAB =cAdA =cBAG']  
X:1
L:1/8
M:4/4
K:D
|: de | f2 fg af (3gfe | fdec dcAG | F2 FD FGAB | =cAd^c A2 de | fefg af (3gfe | fdec dcAG | 
 FADF GBAG | FA (3DDD D2 :: DE | =F2 FE FGAB | =cAdA =cBAG | Adad fded | =cAd^c A2 de | 
 fefg af (3gfe | fdec dcAG | FADF GBAG | FA (3DDD D2 :|  