The flavours in this dish explode out of your pasta bowl.
Get a spicy Italian-type sausage (a cooking sausage, not a preserved one like pepperoni or salami). Get a few big sausages rather than a bunch of little ones, to make the work go faster. Tin of tomatoes should be about 14 oz (400g) in size. This will make enough sauce for about 3 cups (10 oz / 300 g) of pasta. Don't add salt to the sauce as it will be salty enough with the capers and the feta.