Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
M:4/4
K:Dmix
['fddc ABcA dcAd cAGE D2', 'D2 fdd^c defg ad d2 adfd eccB']  
X:1
L:1/8
M:4/4
K:Dmix
 fddc ABcA | dcAd cAGE | D2 D/D/ D ADFD | E/F/GAB cdeg | fddc ABcA | dcAd cAGE | D2 AD EGAB | 
 cAGE FD D2 | fddc ABcA | dcAd cAGE | D2 FD ADFD | E/F/GAB cdeg | fddc ABcA | dcAd cAGE | 
 D2 AD E/F/GAB | cAGE FD D2 |: fdd^c defg | ad d2 adfd | eccB cdef | gcc/c/c Gceg | fddc ABcA | 
 dcAd cAGE | DD D2 EGAG | cAGE ED D2 :|  