Compose a piece of music following the specified structure and theme.
X:1
L:1/16
Q:1/4=100
M:2/4
K:G
['gdd2 ecc2', 'DFAc Bdgd'  
X:1
L:1/16
Q:1/4=100
M:2/4
K:G
"^No key sig. in ms" gdd2 | ecc2 | BdBG | FAFD | gdd2 | ecc2 | Eedc | d2D2 :: DFAc | Bdgd | DFAc | 
 Bdgd | ceac | Bdgd | BAGF | G2G,2 :|  