Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
Q:1/8=200
M:6/8
K:G
['', 'B>c dB AG', 'fg aA AB cA Bd eg fe/f/', 'cA g/f/g/e/ dG BA/G/ dG GA BG', 'fd g/a/b/g/ e/d/e/f/ g/f/g/e/ dG GA BG', 'cA c/e/g/e/ dG B/A/B/G/ DG GA BG']  
X:1
L:1/8
Q:1/8=200
M:6/8
K:G
 G |: B>c dB AG | FA A>B cA | B>c dB AG | DG G>A BG :|"^2" B>c de fg | aA AB cA | Bd eg fe/f/ | 
 gG GA BG :|"^3" e/f/g/e/ dG BA/G/ | EA AB cA | g/f/g/e/ dG BA/G/ | dG GA BG :| 
"^4" g/f/g/d/ g/a/b/g/ ag/f/ | ge ea fd | g/a/b/g/ e/d/e/f/ g/f/g/e/ | dG GA BG :| 
"^5" ce BG d/B/A/G/ | EA AB cA | c/e/g/e/ dG B/A/B/G/ | DG GA BG | ce BG d/B/A/G/ | EA AB cA | 
 B/G/B/d/ e/d/e/f/ g/f/g/e/ | DG G>A BG ||  