Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:D
['d2 fd Adfe defg', '(3fga fd']  
X:1
L:1/8
M:4/4
K:D
 d2 fd Adfe | defg afdf | e2 ge Beed | cdef{a} gece | d2 fd Adfe | defg afde | (3fga fd (3fga fd |1 
 Bgec d2 Ac :|2 Bgec d2 cd |: eAfA gAaA | fa{b}af gfed | A2 BA cAdA | efed cABc | dAeA fAgA | 
 fa{b}af gefd | (3fga fd (3fga fd |1 Bgec d2 cd :|2 Bgec d2 Ac |]  