Assemble a musical creation that incorporates the furnished motif and conforms to the predetermined alphabetical structure.
X:1
L:1/8
M:2/2
K:A
['[AEA,]2 cA efec [aA]2 ec B/B/B B2', 'A,2 (CA,) (EA,) (CA,)']  
X:1
L:1/8
M:2/2
K:A
|: [AEA,]2 cA efec | [aA]2 ec B/B/B B2 | A/A/A/ cA f a2 f | ec Bc A/A/A A2 :: 
 A,2 (CA,) (EA,) (CA,) | A,2 A,C B,/B,/B, B,2 | A,2 (CA,) (EA,) (CA,) | Ac BA A/A/A A2 | 
 A,2 (CA,) (EA,) (CA,) | A,2 A,C B,/B,/B, B,C | A,C EC [AEA,]3 f | e>c B>c A/A/A A2 :|  