Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
Q:1/8=120
M:2/2
K:G
['(B2 G)d']  
X:1
L:1/8
Q:1/8=120
M:2/2
K:G
 g | b/a/g/f/ gd (B2 G)d | BGdG F.A.Ag | b/a/g/f/ .g.d (B2 G)d | (c/d/e) (Ac) (BG)G | d | 
 (cG)(dG) (eG)(dG) | (BG)(dG) (e/d/)(c/B/) .A.c | (BG)(dG) (cG)(dG) | (c/d/e)(Ac) (BG)G :|  