Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:F
['cccd c2']  
X:1
L:1/8
M:2/4
K:F
 F | cccd | c2 AA | cccd | ccAA | cccd | c2 A z | cc A2 | cc A2 | cccd | ccA |]  