Develop chord structures to complement and enrich the harmony of the allotted musical excerpt.
"^1st time" D2 |: G2 GABc | d3 cBG | c2 cBAG | A2 FADF | GFGABc | d2 dcBG | 
 cBAGFG |1 A4 D2 :|2 A3 gfd |: ed e2 f2 | g3 dBG | cBAGFG | A3 gfd | 
 edeg (3fga | g3 dBG | cBAGFG |1 A3 gfd :|2 (3ABA FADF ||33 G4 ||  
X:1
L:1/8
M:3/4
K:G
"^1st time" D2 |:"G" G2 GABc | d3 cBG |"Am" c2 cBAG |"D" A2 FADF |"G" GFGABc | d2 dcBG | 
"Am" cBAGFG |1"D" A4 D2 :|2"D" A3 gfd |:"C" ed e2"D" f2 |"G" g3 dBG |"Am" cBAGFG |"D" A3 gfd | 
"C" edeg"D" (3fga |"G" g3 dBG |"Am" cBAGFG |1"D" A3 gfd :|2"D" (3ABA FADF ||33"G" G4 ||  