Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/4
Q:1/2=100
M:2/2
K:F
['c2 c2 c3 B/c/ d c B']  
X:1
L:1/4
Q:1/2=100
M:2/2
K:F
|: c2 c2 | c3 B/c/ | d c B A | G3 C | F A2 G | A c2 B | A2 TG2 | F4 |:  