Develop musical pieces by incorporating the given chord changes.
'A', 'D', 'A', 'E', 'A', 'D', 'E7', 'A', 'A', 'D', 'A', 'E', 'A', 'D', 'E', 'A', 'A', 'Bm', 'A', 'E', 'A', 'D', 'E7', 'A'  
X:1
L:1/8
M:4/4
K:A
|: e |"A" afec"D" defg |"A" afec"E" B2 Be |"A" afec"D" defg |"E7" edcB"A" A2- A :| B | 
"A" c2 cA"D" d2 dB |"A" c2 cA"E" B2 Be |"A" cccA"D" defa |"E" edcB"A" A2 (AB) | 
"A" (3cdccA"Bm" (3deddB |"A" (3cdccA"E" B2 Be |"A" (3cdccA"D" defa |"E7" edcB"A" A2- A ||  