Down Home Bean Soup

16 oz cans each:
pinto beans, Great Northern beans, Red Kidney beans, garbanzo beans
Rinsed and drained
8 oz tomato paste
8 oz mushroom pieces
2 16 oz cans refried beans
2 cups water
2 cups diced ham
1 package dry onion soup mix

Mix in slow cooker for at least 6 hours on low.