Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
Q:1/4=120
M:2/2
K:Amix
['A,2 A,B, CB, CD', 'abaf e a2 b']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:Amix
"^Moderately Quick" A,2- | A,2 A,B, CB, CD | (E [AA]2) B [AA]2 !slide!A,2- | A,2 A,B, CB, CD | 
 (EF)ED E2 !slide!A,2- | A,2 A,B, CB, CD | (E [AA]2) B [AA]2 (!slide![de-]2 | [ee])fed cBAF | 
 E!slide![AA][AA]B [AA]2 :: ([de-] | [ee]2) a2 abaf | e a2 b a4 | cdef gagf | e(d [dg]2) [dg]3 f | 
 e([de-][ee])a- abaf | e a2 b a2 (!slide![de-]2 | [ee])fed cBAF | E!slide![AA][AA]B [AA]2 :|  