Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:D
['(G<B) A2 (B<e)e>d{d} c>BA>=G F>G(A<F)', 'd3 g f>e(d<g)']  
X:1
L:1/8
M:4/4
K:D
 G | F>G(A<F) (G<B) A2 | (B<e)e>d{d} c>BA>=G | F>G(A<F) (G<B)A<d | B>e (d/c/B/c/) d3 G | 
 F>G(F<A) (G<B) A2 | (B<e)e>d{d} c>BA>=G | F>G(A<F) (G<B)A>d | B>e (d/c/B/c/) d3 || g | 
 f>e(d<g) (f<a)(g<d) | (B<e)e>d c>d(e<^g) |{g} f>e(d<g) (f<a)(f<d) | B>e (d/c/B/c/) d3 g | 
 f>e(d<g) (f<g)(f<d) | (B<e)e>d c>d(e<^g) | f>a (g/f/e/d/) (c/d/e/c/) d>A | B>e (d/c/B/c/) d3 ||  