Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/4
M:3/4
K:Amin
['e e', 'e f/e/ d/c/', 'c c', 'A a']  
X:1
L:1/4
M:3/4
K:Amin
 E | A A B | c A/B/ c/d/ | e e a | ^g ^f/g/ e | a a a | e e e | d/e/ f/e/ d/c/ | B2 :| g | 
 g a/g/ f/e/ | f g/f/ e/d/ | e f/e/ d/c/ | d G g | g- g/a/ g | e c d | e f/e/ d/c/ | c2 d | 
 e f/e/ d/c/ | d e/d/ c/B/ | c d/c/ B/A/ | ^G E A | A2 B | c d e | d/c/ B- B/A/ | A2 || E | 
 c c c A | e/d/e/f/ e ^f/^g/ | a c B e | c B/c/ A E | c c c A | e/d/e/f/ e ^f/^g/ | a c B3/2 A/ | 
 A3 || A | a a A a | g g G g | ^f e e3/2 ^d/ | e4 | e e/e/ e a | d4 | c c/c/ c e | B4 | 
 c3/2 B/ A/B/c/d/ | e/d/e/f/ e a | ^g a b ^g | a4 :|  