Design a musical work that abides by the outlined structure and integrates the assigned theme.
X:1
L:1/8
Q:1/4=120
M:4/4
K:Bb
['(D<F) B>c', 'DB,FD BFdB'  
X:1
L:1/8
Q:1/4=120
M:4/4
K:Bb
"^Slow" E | (D<F) B>c (d2 d>)c |{Bc} B>A (B<g) f<dd<f | D<F (B>c) (d2 d>)f | 
 (3efg (3cde (3ABc (3FGE | (D<F) B>c d2- d>c |{Bc} B>A(B<g) f<dd>f | (3efg (3cde (3dfb (3dcB | 
 (3ABc (3FGA B<B,B, || g | f>B A<B F<BD<B | DB,FD BFdB | cC=B<C E<CG<E | c<Ge<c gf=e_e | 
 d<BA<B FBDB | DB,FD BFdB |{cd} (3c=Bc (3C=B,C (3EDE (3G^FG | (3Agf (3edc d<BB ||  