Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/4
M:3/4
K:G
['G F', 'B/c/ d']  
X:1
L:1/4
M:3/4
K:G
 D | G2 D | G3/2 A/ B | c2 B | A2 G | G F E | D3/2 E/ D | F2 G | A2 d/c/ | B3/2 A/ G | B c d | 
 e2 c | A2 G | G F E | D G F | G3 | G2 :: B/c/ | d B/c/ d | d B/c/ d | G3/2 A/ G | G B d | 
 e c/d/ e | e c/d/ e | A3/2 B/ A | A2 c | B3/2 c/ d | e3/2 f/ g | f3/2 g/ a | d2 c | B3/2 A/ G | 
 A/B/ c F | G3 | G2 :|  