Design harmonic structures to improve the musical piece.
d2Bd gfed | B2G2 BGBd | (3(cdc)A2 (3(fgf)d2 | gfga bage | d2Bd gfed | 
 B2G2 BGBd | (3(cdc)A2 (3(fgf)d2 | gfga g4 :: b2ga g2fg |{fg} f2e2 e^dea | 
 a2f2 fdfa | a2g2{a} gfga | b2ga g2fg |{fg} f2e2 e^dea | a2f2{g} fdfa | 
 aggf g4 :|  
X:1
L:1/16
Q:1/4=120
M:2/4
K:G
"G" d2Bd"C" gfed |"G" B2G2 BGBd |"Am" (3(cdc)A2"D7" (3(fgf)d2 |"G" gfga bage |"G" d2Bd"C" gfed | 
"G" B2G2 BGBd |"Am" (3(cdc)A2"D7" (3(fgf)d2 |"G" gfga g4 ::"G" b2ga g2fg |"Am"{fg} f2e2 e^dea | 
"D7" a2f2 fdfa |"G" a2g2{a} gfga |"G" b2ga g2fg |"Am"{fg} f2e2 e^dea |"D7" a2f2{g} fdfa | 
"G" aggf g4 :|  