Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:2/2
K:Emin
['BE{F} (3EDE BAFA', 'D2 (3AB^c']  
X:1
L:1/8
M:2/2
K:Emin
 dc | BE{F} (3EDE BAFA | BFAF DEFA | BE{F} (3EDE BAFA | d^cdf e2 dc | BE{F} (3EDE BAFA | 
 BFAF DEFA | d^cde fdec | dBAF E2 || FE | D2 (3AB^c dcdA | (3B^cd AF BFAF | D2 (3AB^c dcde | 
 fdcA BFAF | D2 (3AB^c dcdf | edef g2 fg | afge fde^c | dBAF E2 ||  