Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
M:4/4
K:C
['ABA AGA BGE', 'GBd g3'  
X:1
L:1/8
M:4/4
K:C
[M:6/8][K:G]!p! e Ca .ae f Ma e va Ca[Q:1/8=320].d/B/ | ABA AGA | BGE G3 | ABA GBd | egd edB | 
 ABA AGA | BGE G2 D | GBA G2 B | dBG B2 :| d/B/ | GBd g3 | gba g3 | GBd g3 | efg edB | GBd g3 | 
 gba g3 | aba g2 e | efg e2 :|  