Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
M:4/4
K:Amix
['A2 c2 BAAc', 'a2 A2 feef', 'A2 Af ecce', 'aAca aeef']  
X:1
L:1/8
M:4/4
K:Amix
|: A2 c2 BAAc | Acfc e2 ef | A2 c2 BAAc | aecA B2 Bc | A2 c2 BAAc | Acfc e2 ef | eaaf ecce | 
 aAcB A2 Ac :: a2 A2 feef | Aadf e2 ef | a2 A2 feef | ecBA B2 Bc | a2 A2 feef | Aadf e2 ef | 
 eaaf ecce | aAcB A4 :: A2 Af ecce | Aadf e2 ef | A2 Af ecce | aecA B2 Bc | A2 Af ecce | 
 Aadf e2 ef | eaaf ecce | aAcB A2 Ac :: aAca aeef | aAca e2 ef | aAca aeef | ecBA B2 Bc | 
 aAca aeef | aAca e2 ef | eaaf ecce | aAcB A4 :|  