Leek and Mushroom Fettuccine with Corn and Feta

- ounces fettuccine pasta

butter

leeks (, white and green parts only, sliced into thin rounds)

salt

- ounces white button mushrooms (, wiped clean and roughly chopped)

corn ((you can use canned corn, frozen corn, corn off the cob, etc...))

garlic cloves (, minced)

dried thyme

dried parsley

salt and fresh ground pepper (, to taste)

olive oil

crumbled feta cheese