ltpour

Here is an example of a simple twelve-tone composition written for Csound:
```
// Define the twelvths
a = 0.5 * sin(2 * pi * 1.0 / 12);
b = 0.5 * sin(2 * pi * 2.0 / 12);
c = 0.5 * sin(2 * pi * 3.0 / 12);
d = 0.5 * sin(2 * pi * 4.0 / 12);
e = 0.5 * sin(2 * pi * 5.0 / 12);
f = 0.5 * sin(2 * pi * 6.0 / 12);
g = 0.5 * sin(2 * pi * 7.0 / 12);