Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
M:12/8
K:A
['dcd f2 e', 'b2 a']  
X:1
L:1/8
M:12/8
K:A
|: e2 c cBc d2 c B2 c | d3 dcd f2 e c2 d | e2 c cBc d2 c B2 c |1 dcd f2 e A3 :|2 dcd f2 e A3 Ace |: 
 a3 aga b2 a gfe | f3 fef g2 f efg | a3 aga b2 a gfe |1 fga b2 a gfg a2 e :|2 fga b2 a gfg a3 ||  