Develop harmonious melodies based on the provided chord structures.
'G', 'Em', 'C', 'G', 'C', 'D', 'G', 'D', 'G', 'D7', 'G', 'G', 'D', 'Em', 'D', 'C', 'D', 'G', 'D', 'G', 'D7', 'G'  
X:1
L:1/8
Q:1/4=140
M:4/4
K:G
 (3DEF |"G" G2 G2 GABc | dBdg dBGB |"Em" E2 E2"C" EFGE |"G" DB,DG DB,G,B, |"C" CB,CD EG"D"FA | 
"G" GABc"D" de f2 |"G" dBGB"D7" cAGF |"G" G2 G2 G2 :: dc |"G" BdGd BdGd |"D" AdFd AdFd | 
"Em" GBEB GBEB |"D" FADA FADB, |"C" CB,CD EG"D"FA |"G" GABc"D" defg |"G" dBGB"D7" cAGF | 
"G" G2 G2 G2 :|  