I’ve got a long-standing rule when it comes to theatre: I try not to see jukebox musicals. First of all, I think they’re lazy: it’s like watching musical theatre karaoke, or perhaps more like a concert for people who are too old to go to concerts anymore. (Sorry for the ageist joke, but there’s a reason why, with the exception of Green Day’s American Idiot, most jukebox musicals appeal to the baby boomers.) The other reason is that when you randomly stuff popular songs into a narrative, the result is rarely strong, whether the songs form a biographical tale or, in the case of Mamma Mia!, a nonsensical musical backdrop for the insane goings-on depicted on stage. A new musical, which opened last week, suffers from the same failings, although A Night With Janis Joplin is more than just a bad jukebox musical: it’s an uncomfortably irrelevant celebration of the titular blues singer.