Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
M:4/4
K:G
['GFGA GBAG', 'edef gfed egfa g2 dc BcdB'  
X:1
L:1/8
M:4/4
K:G
|: D2 | GFGA GBAG | FGAB c2 BA | GFGA GBAG | FGAF D2 EF | GFGA GBAG | FGAB c2 BA | BcdB ecAF | 
 G2 GG G2 :: d2 | edef gfed | egfa g2 dc | BcdB cBAG | FGAF D2 Bd | edef gfed | egfa g2 dc | 
 BcdB ecAF | G2 GG G2 :|  