Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/4
M:3/2
K:G
['z B c']  
X:1
L:1/4
M:3/2
K:G
 D | G F G3 A/B/ | c A F D z B | c c B3/2 A/ G E | F G A2 z B | c e d2 G A | B A G2 D A/G/ | 
[M:5/4] F D G d c |[M:3/4] B/G/ A A | G2 |]  