Compose a melodious orchestration that adheres to the designated chord structure.
'G', 'D7', 'G', 'D7', 'Em', 'D7', 'B7', 'Em', 'D', 'D7'  
X:1
L:1/8
M:4/4
K:G
|:"G" G>A B>c B2 B>A | G>A B>G"D7" A2 D2 |"G" G>A B>c B2 B>c |"D7" d>e d>c B2 A2 :: 
"Em" G>F E>F"^(B7)" G>A B2 |"D7" G>F E>G"B7" F2 B,2 |"Em" G>F E>F G>A B>c |"D" d>e d>c"D7" B2 A2 :|  