Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:2/2
K:D
['d/c/B/A/ F<D', 'd<d f>a d>a f<a', 'd/c/B/A/ G/F/E/D/', 'd f d<df<a d>af>a =c>ge>f g2 ga/b/']  
X:1
L:1/8
M:2/2
K:D
 A, | D<D F>A d/c/B/A/ F<D | E<=C =c>E G2 G<B | A>DF>A d/c/B/A/ F<D | E<e c>A d2 d :| f | 
 d<d f>a d>a f<a | =c>g e<f g2 ga/b/ | a>df>d a>df>d fg/a/ g<f | d<d f>a d>a f<a | 
 g/f/e/d/ c<e g2 ga/g/ | f<a e>f d>fB>d | A<F d>F A2 A :| c | d/c/B/A/ G/F/E/D/ d/c/B/A/ G/F/E/D/ | 
 E<=C =c>E G2 G>E | D/E/F/G/ A/B/c/d/ D/E/F/G/ A/B/c/d/ | D>dF>d B>AG>F | D>dE>d F>dE>d | 
 =C<c c>E G2 G>E | C>dE>d F>dE>d | E<e c>A d2 d :| f | d<df<a d>af>a | =c>ge>f g2 ga/b/ | 
 a<df<d a>d g<b | a<d f>d fg/a/ g<f | d<d f.a d>af>a | g/f/e/d/ c<e g2 ga/g/ | f<a e>f d>fB>d | 
 a<f d>f A2 A ||  