Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:2/4
K:Edor
['BE FA', 'B2 Bc/d/']  
X:1
L:1/8
M:2/4
K:Edor
|: F/A/ | BE FA | B>A FA | BE G/F/E | DD/E/ FA | BE FA | BB/A/ FA | Be B/c/B/A/ | FE E :: F/A/ | 
 B2 Bc/d/ | eB cB | A2 AB/c/ | dA BA | B2 Bc/d/ | e/f/e/B/ cA | AB/c/ dF | FE E :|  