Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
M:4/4
K:A
['a gfed cBAa gfed c2 Aa gfed', 'e2 fdBg ecAa fdBg e2 Aa fdBg']  
X:1
L:1/8
M:4/4
K:A
 a | gfed cBAa | gfed c2 Aa | gfed cBAe | a3 e^d e2 :: fdBg ecAa | fdBg e2 Aa | fdBg ecAc | 
 dfBg a2 A z ||  