Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:3/4
K:D
['e2- e>f e>d d<c c>d c>B B<A']  
X:1
L:1/8
M:3/4
K:D
|:"D" f2 e<d d>f |"D" f>e e<d d>f |"Em" e>f g<f g>a |"Em" g<f e2- e>f |"A" e>d d<c c>d | 
"A" c>B B<A A>B |"D" A>G FA"A7" d>f | (3ece"D" d4 ::"Em" e>f gf g>a |"G" ba g2- g>g | 
"D" f>e d<c d>f |"A" ag e2- e>f |"A" e>d d<c c>d |"A" c>B B<A A>B |"D" A>G FA"A7" d>f | 
 (3ece"D" d4 :|  