Develop a harmonious melody by following the provided chord scheme.
'D', 'A7', 'D', 'D', 'A7', 'D', 'A7', 'D', 'D', 'G', 'A7', 'D', 'D', 'G', 'A7', 'D', 'A7', 'D'  
X:1
L:1/8
Q:1/8=300
M:2/2
K:D
|: fg |"D" afaf d2 ef |"A7" gege c2 ef | gfed cABc |"D" defg a2 fg |"D" afaf d2 ef | 
"A7" gege c2 ef | gfed cABc |"D" df"A7"ec"D" d2 :: AG |"D" FAdA FAdA |"G" GBdB GBdB | 
"A7" ABcd efec |"D" defg a2 AG |"D" FAdA FAdA |"G" GBdB GBdB |"A7" ABcd efec | 
"D" df"A7" ec"D" d2 :|  