You don’t have to know every cast member or every song.
You don’t have to know the year it opened or any subsequent revival.
You don’t have to know the composer, the director or the set designer.
And you don’t have to have seen the show live.
There is no criteria for liking a show. If you consider yourself a fan, then you are. Don’t let anyone else tell you otherwise.
I’ll do that in french cuz hum you know not a native english speaker, i don’t want to make mistakes (and be bashed by the feminist gang).