Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
M:4/4
K:D
['', 'dD D2 FDAF', '', 'FD D2']  
X:1
L:1/8
M:4/4
K:D
 (3ABc |: dD D2 FDAF | EFGA BABc | dD D2 FDAF | BDcD dABc | dD D2 FDAF | EFGA BABc | dAcA BdAF | 
 GABc d2 :| (3BAG |: FD D2 FDAF | EFGA B2 AG | FD D2 FDAD | BDcD dBAG | FD D2 FDAF | EFGA BABc | 
 dAcA BdAF | GABc d2 :|  