Build a series of chord progressions that fit well with the existing melody.
FADA FADA | FAdA BAdA | FADF E2FE | DB,A,B, D2DE | FADA FADA | FAdA BABc | 
 dBAF E2FE | DB,A,B, D4 :: f2>f2 fede | fedB ABde | f2>f2 fede | 
 fgaf eAce | f2>f2 fede | fedB ABde | fded (3Bcd Ad | egfe d4 :|  
X:1
L:1/16
M:2/4
K:D
"D" FADA FADA | FAdA"A" BAdA |"D" FADF"C" E2FE |"G" DB,A,B,"D" D2DE |"D" FADA FADA | FAdA"A" BABc | 
"D" dBAF"C" E2FE |"G" DB,A,B,"D" D4 ::"D" f2>f2 fede | fedB"A" ABde |"Bm" f2>f2 fede | 
 fgaf"A" eAce |"G" f2>f2 fede |"E" fedB ABde |"D" fded"G" (3Bcd Ad |"A" egfe"D" d4 :|  