Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:2/4
K:G
['B>c BA']  
X:1
L:1/8
M:2/4
K:G
 B>c BA | Bd Dc | B>c BA | Bd Dc | BA cB | Ad GB/G/ | EA DF | G G2 z | B2 G2 | d2 B2 | g3 d | 
 d3 c | BA cB | Ad GB/G/ | EA DF | G G2 z | B>c BA | GB d>D | EA FD | D G2 z | B>c BA | GB d>B | 
 AG FE | D D2 z | c>B AG | Ad Dc | B>A GA | Bd DA | BA cB | Ad GB/G/ | EA DF | G G2 z |]  