Construct a compatible series of chord changes that support the given music piece.
D | DG GA B2 BG | c2 cA BGFE | DG GA BGBd | ecAG GFED | DG GA B2 BG | 
 c2 cA BGFE | DG GA BGBd | ecA F G3 :: z | eg fe e2 dB | ce dc c2 B2 | 
 ABcA Bc d2 | ecAG GFED | eg fe e2 dB | ce dc c2 B2 | ABcA Bc d2 | 
 ecA F G3 :|  
X:1
L:1/8
Q:1/4=120
M:4/4
K:G
 D |"G" DG GA B2 BG |"C" c2 cA"D" BGFE |"G" DG GA BGBd |"C" ecAG"D" GFED |"G" DG GA B2 BG | 
"C" c2 cA"D" BGFE |"G" DG GA BGBd |"D7" ecA F"G" G3 :: z |"Em" eg fe e2 dB |"Am" ce dc"G" c2 B2 | 
"Am" ABcA"G" Bc d2 |"C" ecAG"D" GFED |"Em" eg fe e2 dB |"Am" ce dc"G" c2 B2 |"Am" ABcA"G" Bc d2 | 
"D7" ecA F"G" G3 :|  