Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
Q:1/8=150
M:9/8
K:D
['gfe fBB', 'd2 e fdf']  
X:1
L:1/8
Q:1/8=150
M:9/8
K:D
 gfe fBB fBB | gfe fBB fga | gbe fBB fBB | agf efd cBA :| d2 e fdf ecA | d2 e fdf gfe | 
 d2 e fdf efg | agf efd cBA :|  