Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
Q:1/4=130
M:2/4
K:D
['A>B cA', 'A>D DF'  
X:1
L:1/8
Q:1/4=130
M:2/4
K:D
"_vb" A>B cA | dc B^G | A>B cA | Bc d2 | f>e dA/B/ | cc Bc | dB AF | DF/A/ B2 || A>D DF | 
 E/D/E/F/ EF/G/ | A>D DF | EF B2 | A>D DF | F/E/F/D/ EA | dc/B/ AF | DF A2 |]  