Assemble a musical creation that incorporates the furnished motif and conforms to the predetermined alphabetical structure.
X:1
L:1/8
M:4/4
K:D
['FG AF']  
X:1
L:1/8
M:4/4
K:D
 DD DE FG AF | GG GF E3 z | EE EF GA BG | AA A2 F3 z | GG GA B^A B2 | AB AG FG AF | A2 GE E A2 G | 
 FE D2 D2 z2 |]  