Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/4
M:4/4
K:A
['c e', 'c e']  
X:1
L:1/4
M:4/4
K:A
 d | c e a2 | a/g/f/e/ a2 | c e a g/a/ | b B B3/2 d/ | c e a2 | a/g/f/e/ a2 | c e B3/2 d/ | 
 c A A :: d | c e e d/c/ | d f f e/d/ | c e f/e/c/A/ | c B B e/d/ | c e e d/c/ | d f f e/d/ | 
 c a B3/2 d/ | c A A :|  