Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:A
['C>DE>C D<F E2 F<B', 'c<eA>e c>e d/c/B/A/']  
X:1
L:1/8
M:4/4
K:A
|: A | C>DE>C D<F E2 | F<B B>c d/c/B/A/ G/F/E/D/ | C>DE>C D<F E2 | F<B A/G/F/E/ A2 A :| d | 
 c<eA>e c>e d/c/B/A/ | G<BE>B G<BE>d | c<eA>e c>e d/c/B/A/ | G<BE>G A3 d | c<eA>c (3efg a2 | 
 F<B B>c d/c/B/A/ G/F/E/D/ | C>DE>C D<F E2 | F<B A/G/F/E/ A2 A ||  