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 A', 'e2 d']  
X:1
L:1/8
M:6/8
K:A
 e | c2 A ABA | agf e2 d | c2 A ABc | d2 c Bcd | c2 A ABA | agf e2 d | c2 A BGB | A3 A2 :| e | 
 A2 B c2 d | efe e3 | d2 B Bcd | e2 d cBA | f2 g agf | e2 d c2 a | c2 A BGB | A3 A2 :|  