Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/4
M:3/4
K:G
['c B']  
X:1
L:1/4
M:3/4
K:G
 (G3/4 A/4) | B A G | d2 (B3/4 d/4) | c B A | B2 (d3/4 d/4) | d B d | d c B | A2 (A3/4 A/4) | 
 A B c | B2 (A3/4 A/4) | B B c | d2 (d3/4 d/4) | d B d | d c B | A2 (d3/4 d/4) | d B d | c B A | 
 G2 |]  