Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/4
M:4/4
K:G
['d/ e']  
X:1
L:1/4
M:4/4
K:G
 d | g f g d | g2 d3/2 d/ | e c/ B/ A d | B G2 d | g f g d | g2 d3/2 d/ | e c/ B/ A d | B G2 B | 
 c3/2 d/ e d/ c/ | B3/2 A/ G B | c3/2 d/ e d/ c/ | B3/2 c/ d c/ B/ | A B c d | e3/2 f/ g B | 
 c B A d | B G2 B | c3/2 d/ e d/ c/ | B3/2 A/ G B | c3/2 d/ e d/ c/ | B3/2 c/ d c/ B/ | A B c d | 
 e3/2 f/ g B | c B A d | B G2 ||  