So I was amazed at the number of people in the Congress foyer before the curtain went up who were Blood Brothers devotees, many of whom boasted they had seen the production four or five times.
Being a Blood Brothers virgin so to speak, I was intrigued.
Almost three hours later I could see why and was a convert.
For the uninitiated, the Willy Russell musical is the haunting and powerful tale set in Liverpool of twin boys separated at birth who are reunited in later life with devastating consequences and a heart-wrenching climax.
Linda Nolan is Mrs Johnstone, the mother who has to make a terrible choice as to which twin she will give away, and is absolutely fantastic in the role she has made her own and gives it her all in a host of catchy numbers.
Alongside her is Sean Jones, one of the outstanding stars of the show.
Sean is brilliant in the role of one of the twin boys, Mickey, as both a young troublesome seven-year-old and a young man whose life begins to unravel.
Also deserving of a mention for versatility is Graham Martin, who plays the policeman who keeps the young Liverpudlians on their toes and a schoolteacher, and The Bill star Daniel Taylor, who plays Sammy, Mickey's older brother who leads him astray.
Emmerdale fans will recognise Mark Jardine, who played Phil Weston in the soap, among the cast, which also includes Keith Burns as the narrator, Simon Willmont as the other twin Eddie Lyons, Vivienne Carlyle as Mrs Lyons and Linzi Matthews as Linda.
If you have never seen the show, catch it today or tomorrow before it goes. It's funny, it's heart warming, it makes you laugh, it makes you cry.
And I want to see it again.