Compose a melodious orchestration that adheres to the designated chord structure.
'A', 'D', 'A', 'D', 'A', 'E7', 'A', 'A7', 'D', 'A', 'E7', 'A7', 'D', 'A', 'E7', 'A', 'A', 'A', 'D', 'A', 'D', 'A', 'E7', 'A', 'A', 'A', 'E7', 'A', 'D', 'D', 'A', 'E7', 'A'  
X:1
L:1/8
M:4/4
K:A
 e2 |"A" ceef a2 (ae) |"D" f2 (fe)"A" a2 (ae) | ceef a2 (ae) |"D" ef"A"ec"E7" B2"A" A2 :| 
"A7" cee=g"D" fddf |"A" ecce"E7" fBBf |"A7" cee=g"D" fddf |"A" ecac"E7" B2"A" A2 :| 
"A" a2 a2 (ef) a2 |"A" (ef)ae"D" fa"A"ef | a2 a2 ef ae |"D" fa"A"ec"E7" B2"A" A2 :| 
"A" c2 (ec) defd |"A" c2 (ec)"E7" BcdB |"A" c2 (ec)"D" defg |"D" af"A"ec"E7" B2"A" A2 :|  