Design a suitable chord progression that aligns with and enriches the provided tune.
D2 |: GA/G/ FG EGDG | AGBG cAFD | GA/G/ FG EGDd | gdBd afdc | 
 BGcF AGEG | DFAB/c/ BGdB | gd (3d/e/d/^c/d/ e=cag ||1 fdcA G2 DE/F/ :|2 
 fA (3cBA GA/G/ FG |: A2 F/G/A cAFA | GgdB cEAG | FG/F/ EF DFAc | 
 BGdB A2 (3def | gf/g/ dG Bdgf | ecag fgdB | c/4d/4c/B dB Ggec ||1 
 ADBA G2 FG :|2 BDAD G2 ||  
X:1
L:1/8
M:4/4
K:G
 D2 |:"G" GA/G/ FG"C" EG"G"DG |"Am7" AGBG"D7" cAFD |"G" GA/G/ FG"Em" EG"D"Dd |"G" gdBd"D7" afdc | 
"G" BGcF"Am" AGEG |"D" DFAB/c/"G" BGdB | gd (3d/e/d/^c/d/"C" e=c"Am"ag ||1"D" fdcA"G" G2 DE/F/ :|2 
"D7" fA (3cBA"G" GA/G/ FG |:"D" A2 F/G/A cAFA |"G" GgdB"Am7" cEAG |"D" FG/F/ EF DFAc | 
"G" BGdB"D" A2 (3def |"G" gf/g/ dG Bdgf |"C" ec"Am"ag"Bm7" fgdB |"Em7" c/4d/4c/B dB"C" Ggec ||1 
"D" ADBA"G" G2 FG :|2"D7" BDAD"G" G2 ||  