Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
M:4/4
K:D
['', 'dF F/F/F AF F/F/D', 'c/B/A de fg (3aaa ab']  
X:1
L:1/8
M:4/4
K:D
 g/f/ g/f/e |: d2 FG AFEF | D2 dc BABc | dF F/F/F AF F/F/D | GBAF D g fe | d2 FGAFEF | D2 dcBABc | 
 dF F/F/F AF F/F/D |1 GB AF D2 (3ABc :|2 GB AF D4 |: de fd e/f/g fe | A2 c/B/A eA c/B/A | 
 de fg (3aaa ab | afef (3efg fe | de fd e/f/g fe | A2 c/B/A eA c/B/A | de fg (3aaa ab |1 
 afef d2 (3ABc :|2 afef d4 ||  