Develop musical pieces by incorporating the given chord changes.
'D7', 'G', 'D7', 'G', 'C', 'G', 'D7', 'G', 'G', 'D7', 'G', 'D7', 'G'  
X:1
L:1/4
M:3/4
K:none
[K:G] B |"D7" c2 d | e2 c |"G" B2 c | d2 B |"D7" A2 B | c2 F |"G" G2 B | D2 B |"C" c2 d | e2 c | 
"G" B2 c | d2 B |"D7" A2 B | c2 F |"G" G3/2 G/ G | G z z ||"G" B2 A | G2 D |"D7" F2 D | c2 B | 
 B2 A | E2 F |"G" A2 G | D2 D | B2 A | G2 D |"D7" F2 D | c2 B | B2 A | E2 F |"G" (G3 | G) z z |]  