Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:2/2
K:G
['egfa gedB', 'G/G/G (BG)'  
X:1
L:1/8
M:2/2
K:G
 b | g2 dg egfa | gedB gddb | g/g/g (dg) egfa | gedB G2 G :| B | G/G/G (BG) AEEA | 
 G/G/G (BG) AGBG | cABG AEEa | gedB G2 G :|  