Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:C
['', 'c>d ec d>e ff eg', 'd/e/ ff f/e/d g3 c/d/ ee e/d/c']  
X:1
L:1/8
M:2/4
K:C
 G |: c>d ec | d>e ff | eg fe | de/d/ cG | c>d ec | d>e ff | eg f/e/d |1 c3 G :|2 c3 e/f/ |: 
 gg g/f/e | a3 d/e/ | ff f/e/d | g3 c/d/ | ee e/d/c | fa a2 | gg fB |1 c3 e/f/ :|2 c3 ||  