Produce a music piece that aligns with the mentioned musical structure and theme.
X:1
L:1/8
M:4/4
K:G
['D D>ED D>ED D>EG B2 B B>AG'  
X:1
L:1/8
M:4/4
K:G
 D |"G" D>ED D>ED | D>EG B2 B |"C" c>BA"G" B>AG |"D" ABd"C" e2 d |"G" B>AG"D" A<BA | 
"C" G>EC"G" DEG |"D" A>BA A>BA |"C" G>AG"G" G2 |]: G |"C" e>de/g/"G" B2 G |"C" e>de/g/"D" a2 b/a/ | 
"C" g>fe"G" dBG |"F" =F>GA"G" G2 :|  