Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:2/2
K:G
['G2 BG', 'g2 bg dgbg gbag'  
X:1
L:1/8
M:2/2
K:G
 G2 BG DGBG | ABcA BG G2 | AGAB cBAG | EAAG FDEF | G2 BG DGBd | cBAB cdef | gedB c2 Bc | 
 dBcA BG G2 :: g2 bg dgbg | gbag fdde | f2 af dfaf | gbag fdef | g2 bg dgbg | gbag fdef | 
 gedB c2 Bc | dBcA BG G2 :|  