Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
M:4/4
K:D
['e2 cA'  
X:1
L:1/8
M:4/4
K:D
|:"D" d2 fd"G" g2 fe |"D" d2 fd"A7" e2 cA |"D" d2 fd"G" g2 fe |"D" (3fga gf"A7" e2 cA :: 
"G" g2 dB B2 dB | g2 dB"A7" e2 cA |"G" g2 dB B2 dB |"A7" A2 af e2 cA :|  