Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/4
M:4/4
K:Emin
['B e']  
X:1
L:1/4
M:4/4
K:Emin
 E | A G A B/c/ | d3/2 c/ B B | e f g f/e/ | e B e B | e f g f | e3/2 d/ B G | A B/c/ d/c/ B/A/ | 
 G E E E | A G A B/c/ | d3/2 c/ B B | e f g f/e/ | e B e B | e f g f | e3/2 d/ B G | 
 A B/c/ d/c/ B/A/ | G E E ||  