Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
M:12/8
K:D
['F2 F FED', 'd2 A B2 A']  
X:1
L:1/8
M:12/8
K:D
|: E | F2 F FED F2 A B2 A | F2 F FED E3 EDE | F2 F FED F2 A B2 A | FGF EFE D3 D2 :: 
 d2 A B2 A d2 A B2 A | FGF FED E3 EDE | d2 A B2 A d2 A B2 A | FGF EFE D3 D3 :|  