Compose a melodious orchestration that adheres to the designated chord structure.
'D', 'G', 'D', 'A', 'D', 'G', 'A7', 'A7', 'D', 'A7', 'D', 'Bm', 'A', 'Bm', 'A', 'Bm', 'A', 'D', 'A7', 'D', 'A7', 'D'  
X:1
L:1/8
M:6/8
K:D
"D" fdd fdf |"G" gfg efg |"D" fdd fdf |"A" Ace a^ga |"D" fdd fdf |"G" gfg efg |"A7" a^ga ba=g |1 
"A7" edc"D" d2 e :|2"A7" edc"D" d2 c |:"Bm" BFB BfB |"A" AEA AeA |"Bm" BFB BfB | fgf"A" edc | 
"Bm" B3 BfB |"A" A3 Aag |"D" fdf aba |1"A7" gec"D" d2 c :|2"A7" gec"D" d2 |]  