Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:4/4
K:G
['dGBG FAAc', 'g2 fg afed'  
X:1
L:1/8
M:4/4
K:G
 g | dGBG FAAc | BGBd g2 fe | dGBG FAAc | BGAF G2 G :| f | g2 fg afed | ggfg a2 df | g2 fg afed | 
 egfa g2 gd | g2 fg afed | ggfg a2 df | g2 fg afed | egfa gbeg ||  