Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:6/8
K:A
['c2 B', 'e2 A']  
X:1
L:1/8
M:6/8
K:A
 e3 f2 e | c3 c2 B | A2 e f>ga | e>dc B>cB | A2 E E>cB | A>ce a2 f | e2 A c2 B |1 A3 A2 c :|2 
 A3 AED || C>EA A>EC | D>FA A>FD | C>EA d2 c | B3 B>cd | e2 A A>ag | f2 d d>ef | e2 A c2 B |1 
 A3 AED :|2 A3 A3 ||  