Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:2/4
K:D
['B/c/d/B/ AF', 'fd fa']  
X:1
L:1/8
M:2/4
K:D
 B/c/d/B/ AF | A2 A2 | B/c/d/B/ AF | E2 E2 | d>B AF | Ad f/g/f/e/ | dB AF | D2 DA | dd/B/ AF | 
 A2 AB/c/ | d/e/d/B/ AF | E2 EB/c/ | d/e/d/B/ A/F/D | A>d fe | dd/B/ A/F/E | D- D || fd fa | 
 eg f/g/f/e/ | fd/d/ fa | f2 f/g/f/e/ | f>d fa | e/f/g fe | dd/B/ AF | D2 D | fd fa | eg g/f/e | 
 fd fa | f2 f/g/f/e/ | f>d fa | eg f/g/f/e/ | d>B A/F/E | D2- D ||  