Design a musical work that abides by the outlined structure and integrates the assigned theme.
X:1
L:1/8
Q:1/4=100
M:4/4
K:G
['GgdB G/F/G/A/ GD']  
X:1
L:1/8
Q:1/4=100
M:4/4
K:G
 GgdB G/F/G/A/ GD | EcBA B/A/B/c/ BA | GgdB G/F/G/A/ GD | EG F/G/A/F/ G2- G2 |:  