Create musical compositions that adhere to the specified chord changes.
'D', 'G', 'D', 'A', 'D', 'G', 'D', 'A', 'D', 'D', 'G', 'D', 'A', 'D', 'G', 'D', 'A', 'D'  
X:1
L:1/8
M:2/4
K:D
|:"D" FA AF |"G" GB BG |"D" FA AF |"A" GE E2 |"D" FA AF |"G" GB BG |"D" FA"A" E/F/G/E/ | 
"D" FD D2 ::"D" DF Ad |"G" d/c/B/c/ dB |"D" AF AF |"A" GE E2 |"D" DF Ad |"G" d/c/B/c/ dB | 
"D" AF"A" E/F/G/E/ |"D" FD D2 :|  