Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
Q:1/2=80
M:4/4
K:D
['Ae-eg fdec Ae-eg gGdB Aeeg fdef g-g', 'Ag (f/g/a)'  
X:1
L:1/8
Q:1/2=80
M:4/4
K:D
 Ae-eg fdec | Ae-eg gGdB | Aeeg fdef | g-g (a/g/f/e/) dGdB :: Ag (f/g/a) fdec | 
 Ag (f/g/a) GB/c/ dB | Ag (f/g/a) fdef | gg (a/g/f/e/) dBdB :|  