Develop musical pieces that align with the given chord changes.
'D', 'G', 'D', 'G', 'A', 'D', 'G', 'D', 'Em', 'A', 'D', 'D', 'A', 'D', 'D', 'G', 'D', 'G', 'A', 'D', 'Bm', 'Em', 'Bm', 'A', 'Bm', 'Bm', 'A', 'Bm', 'A', 'Bm'  
X:1
L:1/4
M:3/4
K:D
 A |"D" f2 e |"G" d2 c | B c d |"D" A2 A | f2 e |"G" d2 c |"A" B a a | a3 |"D" f2 e |"G" d2 c | 
 B c d |"D" A2 d |"Em" B e d |"A" c f3/2 e/ |"D" d a f | d2 :| A |"D" f/f/ f A | f/f/ f A | f a f | 
 d2 A |"A" e/e/ e e | e/e/ e e | e d e |"D" f d A |"D" f2 e |"G" d2 c | B c d |"D" A2 d | 
"G" B e d |"A" c f3/2 e/ |"D" d a f | d2 |]:"Bm" B d e | f3 |"Em" d c d | e3 |"Bm" d B d |"A" c3 | 
 B c A |"Bm" B3 ::"Bm" f3/2 e/ d/e/ | f d B |"A" e3/2 d/ c/d/ | e d B |"Bm" f3/2 e/ d/e/ | f d B | 
"A" d c A |"Bm" B3 :|  