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
['D2 FA', 'A2 ef']  
X:1
L:1/8
M:4/4
K:D
 DE | F2 AF D2 FA | d2 ec A3 d | cedB AFDF | E2 EE E2 DE | FGAF D2 FA | Bcec A3 g | fdag f2 e2 | 
 d2 dd d2 || d/e/f/g/ | agaf d2 df | edec A2 ef | gfed bagf | e2 ee e2 ag | f2 dB A2 ef | 
 gfbe B3 g | fbad f2 e2 | d2 dd d2 ||  