Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:6/8
K:D
['F^EF GFG AFd A2 d cBA', 'D3 dDD cDD Bcd A2 G FE^D']  
X:1
L:1/8
M:6/8
K:D
 F^EF GFG | AFd A2 d | cBA GFE | FDd A2 G | F^EF GFG | AFd A2 d | cBA GFE | D3 :| dDD cDD | 
 Bcd A2 G | FE^D Ee=d | cB^A Bcd | e2 c dcB | cBA cde | dcB ABc | dDD :|  