Develop harmonious chord progressions that elevate the provided tune.
A>B AB | de f2 |{f} ed Bd | fe f<a | A>B AB | de f2 |{f} ed BG | A4 :: 
 aa/a/ ab | ag f2 |{f} ed Bd | fe f<a | aa/a/ ab | ag f2 |{f} ed BG | A4 :|  
X:1
L:1/8
Q:1/4=60
M:2/4
K:Amix
"D" A>B AB |"D" de f2 |"G"{f} ed Bd |"D" fe f<a |"D" A>B AB |"D" de f2 |"G"{f} ed BG |"A" A4 :: 
"D" aa/a/ ab |"D" ag f2 |"G"{f} ed Bd |"D" fe f<a |"D" aa/a/ ab |"D" ag f2 |"G"{f} ed BG |"A" A4 :|  