Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:4/4
K:Bmin
['BFdB cA F2', 'd2 fd afed']  
X:1
L:1/8
M:4/4
K:Bmin
 F2 | BFdB cA F2 | Bcde fa/f/ ec | BFdB cA F2 | BdcA fecd | BFdB cA F2 | Bcde fa/f/ ec | 
 defd cdeg | fdec B2 :: Bc | d2 fd afed | (3cBA eA fAec | d2 fd afed | Bdcd B2 Bc | d2 fd afed | 
 (3cBA eA fA e2 | faaf eaac | dfec B2 :|  