No they are not kidding and why can’t the producers announce one specific performance as a sing-a-long? Good idea! If it’s not for you then don’t buy a ticket for that performance. This is a musical that works well with audience engagement and responding out loud. The show is a total experience from the moment you walk into the theatre up until the very end. That’s one of the reason there are so many people who return for repeat performances. Alex Timbers is great at immersive experiences- can’t wait to experience Here Lies Love.