There are a couple reasons you may get a notification or email about a show you didn't explicitly add to your LiveList.
1) You added a Channel to your LiveList. Anytime you add a Channel, all the shows from that Channel are automatically added to your LiveList. For instance, if you added the Festival Madness Channel, any festival show will be added to your list.
2) We recommended the show to you based on your tastes. We want to make sure you don't miss any shows you might like, so we sometimes send notifications about shows we think you will enjoy.
You can adjust what notifications you receive by going to your Notifications section of the app or the My Account section on desktop.