Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
M:4/4
K:D
['d2 d=c']  
X:1
L:1/8
M:4/4
K:D
 Ac | d2 d=c ADFA | G2 BG =cGBG | Add=c ADFD | GBAG FDAc | d2 d=c ADFA | G2 BG =cGBG | Add=c ADFD | 
 GBAG FDAd | effd gfed | cABc d2 de | f2 fd gfed | eaag e2 de | effd gfed | cABc d2 A=c | 
 d2 d=c ADFD | GBAG FD D2 |]  