Generate harmonious tunes by incorporating the specified letter-based framework and the presented motif.
X:1
L:1/8
Q:1/8=128
M:4/4
K:Bb
['B/c/d BF']  
X:1
L:1/8
Q:1/8=128
M:4/4
K:Bb
|: F | B/c/d BF G>B F>B | F>B d/c/B/c/ dc cd | B/c/d BF G>B F>B | G>B G/F/E/D/ C2 B,F | 
 B/c/d BF G>B F>B | F>B d/c/B/c/ dc cd | B/c/d BF G>B F>B | G>B G/F/E/D/ C2 B,d | B>B dB f>B df | 
 e>g d>f g/f/e/d/ c>d | B>B dB f>B df | e>g g/f/e/d/ c2 Bd | B>B dB f>B df | e>g d>f g/f/e/d/ c>d | 
 B/c/d BF G<B e<g | f>b g/f/e/d/ c2 B :|  