Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/4
Q:3/4=100
M:3/4
K:none
['be in D minor d e d', 'c2 A']  
X:1
L:1/4
Q:3/4=100
M:3/4
K:none
"_Could be in D minor really" d e d | c2 A | f2 e :: a b a | g2 f | e f g | c2 A | d e d | c2 A | 
 f2 e :|  