Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/4
Q:3/4=50
M:3/4
K:A
['c d e3', 'c c z', '[Ac] z [Ac]']  
X:1
L:1/4
Q:3/4=50
M:3/4
K:A
 c |!p! e3 | e c d | e3 | c e a | g z f | e z d |"^*" c d"^*" B | A c d | e3 | e c d | e3 | c e a | 
 g z f | e d B | A3 | A z :: c | e f/e/d/e/ |!p! b z d | c d/c/B/c/ | (a/g/f/e/d/c/) | 
 (c/B/^A/B/c/B/) | g2 f | (f/e/^d/e/d/B/) | A z ::!ff! c | c z c | c z c | e3 | c A B | c2 c | 
 c f e | B3 | B A B | [Ac] z [Ac] | [Ac] z [Ac] | e3 | c a g | g3/2"^**" f/d/B/ | 
 f3/2"^**" e/c/A/ | e3/2"^**" d/B/G/ | A z |]  