Develop musical pieces by incorporating the given chord changes.
'D', 'Em', 'D', 'A', 'D', 'A', 'A', 'Bm', 'Bm', 'A', 'Em', 'A', 'D', 'Em', 'Em', 'D'  
X:1
L:1/4
Q:1/4=160
M:4/4
K:D
 F/E/ |:"D" D D D/E/F/G/ | A A A f/e/ | d B A F |"Em" B E E/G/F/E/ |"D" D D D/E/F/G/ | A A A f/f/ | 
"A" e d c B |1"D" A3/2 B/ A/G/F/E/ :|2"A" A2 A E ||"A" A A/B/ c c/d/ | e e/c/ A3/2 A/ | 
"Bm" B B/c/ d d/e/ |"Bm" f f/d/ B3/2 B/ |"A" c A d A | e A f A |"Em" g f e d |"A" c B A G | 
"D" F d d/c/d/e/ | d A A z |"Em" B e e/d/e/f/ |"Em" e B B z |"D" A d d/c/d/e/ | f d d/c/d/e/ | 
 f z e z | d c/B/ A/G/F/E/ |]  