Craft a musical work adhering to the specified theme and structure.
X:1
L:1/8
M:4/4
K:D
['D<D F>E D2', 'd/e/f/g/ a>f'  
X:1
L:1/8
M:4/4
K:D
 A, | D<D F>E D2 D<A, | D<D F>A B>AF>d | D<D F>E D2 D>F | G>A,F>A, E>A, C<E :| 
 d>fA>f d/e/f/g/ a>f | d>fA>f d>fA>f | d>fA>f d/e/f/g/ a>f | g>Af>A e>Ac>e | dfAf d/e/f/g/ a>f | 
 dfAf d>Ad>f | B<gA<f G<eF<d | G>A,F>A, E<A,C<E |]  