Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:2/4
K:G
['D GA_Bc d2 c2 =f2 ed e^cd_e']  
X:1
L:1/8
M:2/4
K:G
 D | GA_Bc | d2 c2 | =f2 ed | e^cd_e | dc_BA | _BA G2 | G2 GF | GA _B2 | dcBA | _BAG |]  