Develop musical pieces that align with the given chord changes.
'D', 'Em', 'A7', 'D', 'Em', 'G', 'A7', 'D', 'Em', 'D', 'A7', 'D', 'D', 'G', 'G', 'D', 'A7', 'D', 'Em', 'D', 'A7', 'D'  
X:1
L:1/8
M:6/8
K:D
 (3A/B/c/ |"D" dcd Adf |"Em" e^de"A7" Ace |"D" fba"Em" gfe |"G" dcB"A7" A>Bc |"D" dcd Adf | 
"Em" e^de Beg |"D" fba"A7" gfe |"D" dAf d2 :: f/g/ |"D" a^ga dfa |"G" b^ab dgb |"G" bag"D" fed | 
"A7" cBA gfe |"D" dcd Adf |"Em" e^de Beg |"D" fba"A7" gfe |"D" dAf d2 :|  