Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:6/8
K:Ddor
['FGA ABc ded cAG', 'cAG FGA']  
X:1
L:1/8
M:6/8
K:Ddor
 A/G/ | FGA ABc | ded cAG | FGA cAG | FGA A2 G | FGA ABc | ded cAG | FDF GAG |1 FDF G2 :|2 
 FDF G2 g || fed cde | fed cAG | FGA cAG | FGA A2 g | fed cde | fed cAG | FDF GAG |1 FDF A2 g :|2 
 FDF GAG | FDF G2 ||  