Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:4/4
K:Edor
['B B2 AB d2 BA (F/E/)D- D2-', 'z A Be- ed B2']  
X:1
L:1/8
M:4/4
K:Edor
 B | B2 AB d2 BA | (F/E/)D- D2- D2 (CD) | EA- AB G2 (E/D/)B, | E4- E2 z B | B2 AB d2 BA | 
 (F/E/)D- D2- D2 (CD) | EA- AB G2 ED | E4- E2 z || B | Be- ee e2 BA | dB- B2- B z z A | 
 Be- ed B2 Ad | B4- B2 z A | Be- ed B2 AG | (F/E/)D- D2- D2 (CD) | EA- AB G2 ED | E4- E2 z ||  