Create a musical composition using the given alphabetical pattern and melodic theme.
X:1
L:1/8
M:4/4
K:A
['A>B c2 B>A e2 f>e c<eA>B c2', 'c>d e2', 'f>ec>d e2 f>g', 'a>e c2 a>e']  
X:1
L:1/8
M:4/4
K:A
|: A>B | c2 B>A e2 f>e | c<eA>B c2 a>f | e2 a>f e>cA>c | e>cB>A B2 A>B | c2 B>A e2 f>e | 
 c<eA>B c2 a>f | e2 a>f e>fA>B | c2 A2 A2 :: c>d | e2 c>d e2 f>g | f<af>g f<aa>f | e2 a>f e>cA>c | 
 e<cB>A B2 c>d | e2 c>d e<Af>g | a2 f>g f<aa>f | e2- e>f e>fA>B | c2 A2 A2 :: A>B | c<Ac>d e>Ac>e | 
 f>ec>d e2 f>g | a>ec>e f>ec>d | e>cB>A B2 A>B | c<Ac>d e2 c>e | f>ec>d e2 f>g | a2- a>f e>fA>B | 
 c2 A2 A2 :: c>d | e2 a>e c2 a>e | f>ga>f d3 f | e2 f>e c2 A>c |1 e>cB>A B2 c>d | 
 (3efe a>e c2 a>e | f>da>f d>Aa<f | e>ca>f (3efe A>B | c2 A2 A2 :|2 e>cB>A B2 A>B | c>ed>f e<cA>c | 
 d>cB>A c2 a>f | e2- e>f e<fA>B | c2- c>A A2 ||  