Develop musical pieces that align with the given chord changes.
'D', 'G', 'A7', 'D', 'D', 'G', 'A7', 'D', 'F#m', 'B7/D#', 'B7', 'Em', 'A7/C#', 'A7', 'Bm', 'G', 'Em', 'A7', 'D'  
X:1
L:1/4
Q:1/2=120
M:2/2
K:D
|:"^A" A |"D" f2 f e/f/ |"G" g f e d |"A7" c d e f |"D" d A F A |"D" f2 f e/f/ |"G" g f e d | 
"A7" c d e f |"D" d2 d ::"^B" f/g/ |"F#m" a2"^/E" a g/a/ |"B7/D#" b a"B7" g f | 
"Em" g2"^/D" g f/g/ |"A7/C#" a g"A7" f e |"Bm" f2"^/A" f e/f/ |"G" g f"Em" e d |"A7" c d e f | 
"D" d2 d :|  