Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:3/4
K:D
['C>D E2']  
X:1
L:1/8
M:3/4
K:D
 D>A, A,3 D | B,B, B,4 | C>D E2 C2 | D2 D,2 z2 | D>A, A,3 D | B,B, B,4 | C>D E2 C2 | D2 D,2 z2 | 
 C>D E2 E2 | F>D E4 | C>D E2 E2 | F>D E4 | D>C B,2 GE | DC D4 |]  