Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
Q:1/8=128
M:4/4
K:E
['g>f e/f/g/a/ bg fe']  
X:1
L:1/8
Q:1/8=128
M:4/4
K:E
|: E>G Bc BG B>c | E2 e>c BG F>G | E>G B>c B<G Ba | g>a f>g ee e2 | E>G Bc BG B>c | E2 e>c BG F>G | 
 E>G B>c B<G Ba | g>a f>g ee e2 | g>f e/f/g/a/ bg fe | dB fB gB fB | g>f e/f/g/a/ bg fe | 
 c>a gf ee e2 | g>f e/f/g/a/ bg fe | dB fB gB fB | g>f e/f/g/a/ bg fe | c>a gf ee e2 :|  