Compose a chordal backing that synchronizes seamlessly with the existing melody.
|: gfag | f3 e | defe | d3 c | Bcdc | B3 A |1 GABc | d4 :| G2 z2 | z4 |: 
 Bcdc | B3 A | Bcdc | B3 A | Bcdc | B3 A |1 .g2 .d2 | .g2 .d2 :|  
X:1
L:1/8
Q:1/4=240
M:2/4
K:G
|:"G" gfag |"D" f3 e |"C" defe |"D" d3 c | Bcdc |"D" B3 A |1 GABc |"D" d4 :|"G" G2 z2 | z4 |: 
"C" Bcdc |"D" B3 A |"C" Bcdc |"D" B3 A |"C" Bcdc |"D" B3 A |1 .g2 .d2 | .g2 .d2 :|  