Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:6/8
K:Amix
['', 'e A>AA ABc cac Bcd ecA c2', 'Aff Aff']  
X:1
L:1/8
M:6/8
K:Amix
 e |: A>AA ABc | cac Bcd | ecA c2 B | cAA A2 e | A>AA ABc | cac Bcd | ecA c2 B | cAA A3 :| 
 Aff Aff | Aff fec | Aee Aee | Aee ecA | dcd ece | eac Bcd | ecA c2 B | cAA A3 :|  