Design a musical work that abides by the outlined structure and integrates the assigned theme.
X:1
L:1/8
M:2/4
K:G
['B/c/ dB Gd dc Af gg/g/ gb', 'z G FG dc Bd gf ee'  
X:1
L:1/8
M:2/4
K:G
|: B/c/ | dB Gd | dc Af | gg/g/ gb | a3 d | ba gf | ef ge | dB cA | B2 B z :: G | FG dc | Bd gf | 
 ee fc | d2 d2 | ba gf | ef ge | dB cA | B2 B z :|  