Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:A
['A>e e2 e>A c<A']  
X:1
L:1/8
M:4/4
K:A
|:"A" A>e e2 e>A c<A |"E7" B>e e2"G" d>=G B<G |"A" A>e e2 e>A c<A |"E7" E/E/E E2"G" =G>A B<G :: 
"A" A>a a>e c>a c<A |"G" B>=g g>e d>g B<=G |"A" A>a a>e c>e a<e |"G" =g<b"^(C)" e<g"G" d<g B<=G :|  