Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:2/4
K:G
['', 'd>c BB'  
X:1
L:1/8
M:2/4
K:G
 B |:"G" d>c BB | d>c BB |"D7" dc BA |"G" G2 z B | d>c BB | d>c BB |"D7" dc cB/A/ |1 
"G" GB GB/B/ :|2"G" GB G z |]  