Develop musical pieces based on the specified chord pattern.
'D', 'A', 'D', 'G', 'D', 'A', 'D', 'D', 'A', 'D', 'G', 'A', 'D', 'G', 'A', 'G', 'A', 'G', 'A', 'G', 'A', 'D'  
X:1
L:1/8
M:2/2
K:D
 DFAd |"D" fdfd"A" cdec |"D" dBAF DFA=c |"G" BGBG"D" FGAF |"A" E2 FE"D" DFAd |"D" fdfd"A" cdec | 
"D" dBAF DFA=c |"G" BGBd"A" cdec |"D" d4 :: Acef |"G" gf g2"A" Ace^g | ag a2 Acef |"G" gfge dfed | 
"A" cB A2 Acef |"G" gf g2"A" Ace^g | ag a2 Acef |"G" gfge"A" cdec |"D" d4 :|  