Compose music that follows the specified structure and includes the provided theme
X:1
L:1/8
M:2/2
K:Bb
['BGFD FGFD F2 Bc', 'dBdB gfed', 'z D FGFD EGFD FGFD F2'  
X:1
L:1/8
M:2/2
K:Bb
 BcdB BGFD | FGFD F2 Bc | dcBG gfed | d2 c2 c2 z F | Bcdc BGFD | FGFD F2 Bc | dcBc fedc | 
 B2 B2 B2 z2 :: Bc | dBdB gfed | eccd e2 f2 | dBdB gfed | d2 c2 c2 Bc | dBdB gfed | eccd e2 f2 | 
 dfed cedc | B2 B2 B2 z :: D | FGFD EGFD | FGFD F2 F2 | GABA fdec | B2 cc c2 z D | FGFD EGFD | 
 FGFD F2 FG | GBeg fdec | B2 B2 B2 z :|  