Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:4/4
K:G
['BD GB, G,3 A/B/ cA BG FA', 'AB/c/ dG FG A/G/F/E/'  
X:1
L:1/8
M:4/4
K:G
|: G/A/ | BD GB, G,3 A/B/ | cA BG FA D>c | c/B/A/G/ G/F/E/D/ G2 EC | B,G A,F GG, G,G/A/ | 
 BD GB, G,3 A/B/ | cA BG FA D>c | c/B/A/G/ G/F/E/D/ G2 EC | B,G A,F GG, G,B/c/ || dB dB e2 AB/c/ | 
 dG FG A/G/F/E/ DB/c/ | dB dB c/4d/4e3/2 e/4f/4g3/2 | f/g/a/g/ f/d/e/f/ g2 Gg/a/ | 
 bg dB c/4d/4e3/2 AB/c/ | dG FG A/G/F/E/ Dc | BG DB, CD/E/ A,D/C/ | B,G A,F GG, G, :|  