Craft a musical work based on the specified structure and given theme.
X:1
L:1/16
Q:1/4=50
M:2/2
K:G
['Bcd e/f/ gB d2 e/d/c/B/', 'gg f>f eed2 e/d/c/B/'  
X:1
L:1/16
Q:1/4=50
M:2/2
K:G
 Bcd e/f/ | gB d2 | e/d/c/B/ A A/B/ | c/d/e/f/ ed | Bcd e/f/ | gB d2 | e/d/c/B/ A/B/c/A/ | 
 G B G2 :: gg f>f | eed2 | e/d/c/B/ A A/B/ | c/d/e/f/ ed | gg f>f | eed2 | e/d/c/B/ A/B/c/A/ | 
 G B G2 :|  