Craft a musical work based on the specified structure and given theme.
X:1
L:1/8
M:4/4
K:G
['BG G2', 'ed Bged eg g2'  
X:1
L:1/8
M:4/4
K:G
|: Gdeg d2{c} BA |{c} BG G2 ed{c} BA | G2 cA BG G2 | cB{c}AG ABGD | Gdeg d2{c} BA | 
{c} BG G2 ed Bg | ezcBcdde | c{c}BA{c}B AG G2 :: Bdde g2 ed | Bged eg g2 | e z ab a3 g | 
 ea z gabge | Bdde g2 ed | Bged eg g2 | G2 cBcdde | c{c}BA{c}BA G3 :|  