Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:9/8
K:G
['D3 FED', 'FED FGA']  
X:1
L:1/8
M:9/8
K:G
|: D3 FED FGA | D3 FED cBA | D3 FED FGA | Bcd A2 G FED :: FGA D3 A3 | FGA D3 FED | FGA AF/G/A D3 | 
 Bcd A2 G FED :|  