Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:2/4
K:G
['Gd G>A Be- e/f/g/e/ dB', 'z gf ed e<f g>e dB AG/A/'  
X:1
L:1/8
M:2/4
K:G
|: Gd G>A | Be- e/f/g/e/ | dB AG/A/ | BA- AB/A/ | Gd G>A | Be- e/f/g/e/ | dB AB | G3 z :: gf ed | 
 e<f g>e | dB AG/A/ | BA- AB/d/ | gg/f/ ed | ef gg/e/ | dB AB | GG G2 :|  