Compose a melodious orchestration that adheres to the designated chord structure.
'Am', 'G', 'Em', 'Am', 'Em', 'Am', 'Em', 'Em', 'Am', 'G', 'Am', 'G', 'Am', 'G', 'Am', 'C', 'G', 'Am'  
X:1
L:1/8
Q:1/8=120
M:4/4
K:Ador
"Am" A a2 g a2 (ef) |"G" gedB"Em" GABG |"Am" A a2 g a2 (ef) |1"Em" gedB"Am" A-A"Em" BG :|2 
"Em" gedB"Am" A3 B || cAeA cAeA |"G" BcdB G3 B |"Am" cAeA cAeA |"G" BAGB"Am" A2- AB | cAeA cAeA | 
"G" BcdB"Am" A2- AB | ABcd"C" efga |"G" gedB"Am" A2 BG ||  