Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
Q:1/2=80
M:4/4
K:Dmin
['G2 FD F2 f2 c2 AG F2']  
X:1
L:1/8
Q:1/2=80
M:4/4
K:Dmin
|:"^NB" z2 | CDEF A2 f2 | cAGF G2 FD | F2 f2 c2 AG | F2 D4 G2 | B2 (3Bcd A2 (3ABc | dAGF G2 FD | 
 F2 f2 c2 AG | F2 D4 |:  