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:C
['[CA]2 E>DE>F E2 E2 G6 FE D>DD>D']  
X:1
L:1/8
M:4/4
K:C
 [CA]2 | E>DE>F E2 E2 | G6 FE | D>DD>D D2 D2 | F6 ED | C>CC>C C2 C2 | E6 DC | D2 G,>G, G,2 x2 |]  