Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:6/8
K:F
['FEF F2 A', 'c2 A']  
X:1
L:1/8
M:6/8
K:F
 C/D/ | FEF F2 A | FEF F2 A | GEC CEF | GEC CDE | FEF F2 A | FEF F2 A | GEC CDE | F3 F2 :| A/B/ | 
 c2 A c2 A | F2 F FAc | d2 B d2 B | G2 G GAB | c2 A c2 A | F2 F GEC | DEF GFE | F3 F2 :|  