Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
Q:1/4=180
M:4/4
K:G
['c2 BA', 'c2 BA'  
X:1
L:1/8
Q:1/4=180
M:4/4
K:G
 BcBA GDGB | dcBc A4 | DEFG A2 AB |1 c2 BA B2 G2 :|2 c2 BA G4 |: B2 d2 E2 FG | AGFE D4 | 
 DEFG A2 AB |1 c2 BA B2 G2 :|2 c2 BA G4 ||  