Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:3/8
K:C
['c B/A/Gc d2 f e/d/cd edc B/A/Gc', 'd2 G de/f/g f>dg a/g/fe dec de/f/g/f/']  
X:1
L:1/8
M:3/8
K:C
 c | B/A/Gc | d2 f | e/d/cd | edc | B/A/Gc | def | e/d/ce | d2 :: G | de/f/g | f>dg | a/g/fe | 
 dec | de/f/g/f/ | edc | d/e/dB | c2 :|  