Vaudeville is having quite the West End moment, with Funny Girl inheriting the Savoy from Gypsy and Mrs Henderson Presents over at the Noël Coward. Gypsy is the pick of the bunch dramatically, delivering theatre history with real psychological heft, but Sheridan Smith’s luminous Fanny Brice gives Funny Girl a fighting chance. She’s such a natural vaudevillian that you begin to wonder if she’s somehow been transported from another age.

It’s all change once more for Gordon Greenberg’s slick, protean revival, which began life at Chichester back in 2014, as three new leads join the show’s transfer from the Savoy to the Phoenix. If not a revelatory version of this 1950 masterwork, it’s certainly proved its staying power, and should continue ticking along nicely (nicely) both here and in its parallel touring production.

Could the fascination of Glenn Close's Norma Desmond transcend the frequent bathos of Lloyd Webber? Would they have sorted out the miking which wrecked last year's first choice of semi-ENO musical, the infinitely superior Sweeney Todd? Yes, to varying degrees. But the real saviour here was the ENO Orchestra, fresh from its triumph alongside its inseparable chorus at the Olivier Awards and now on hand to make a silk purse, or rather a gold cigarette-holder, out of a patchy but always superbly orchestrated score.

War bad, theatre good. That’s about the level of insight available from this amiable show, transferring after a successful run in Bath. It’s one of the weaker entries in the ever-popular backstage genre, sharing Vaudevillian DNA with Gypsy and a Nazi backdrop with Cabaret, but lacking the profundity of either. Though our girls bare all to stick it to Hitler, the drama remains skin-deep.

The seemingly eternal British love affair with Guys and Dolls continues apace with the (somewhat recast) transfer to London of the Chichester production from two summers ago, and a more buoyant way to inaugurate the new theatrical year is hard to imagine.

You'll feel guilty for having bothered with a programme after seeing The Lorax, the Dr Seuss adaptation that puts saving the environment centre-stage at the Old Vic just as the recent climate change gathering in Paris has done on the world stage. Full of unimpeachably good intentions, the production is fun and frolicsome up to a point, and sometimes simply bewildering.

It's hard not to invoke the B word - Barbra, that is, not Brice - and I speak as one who bunked off school to catch her at a midweek matinee when Funny Girl first played London almost 50 years ago. It was standing room only at the Prince of Wales Theatre but by then she was pretty much phoning in her performance, and only the thrill of that voice (smaller than one expected but laser-intense) carried her through. 

This new family musical, based on the popular 2003 Will Ferrell film, has rightly been censured for its extortionate seating prices, hosting the West End’s most expensive top-end tickets at £267.50 a pop – and that’s without the drinks, ice cream and £10 souvenir programme. So, is it worth it?

A pop album drawn from a musical could be off-putting to some. Images of Glee spring to mind or a tweenypop version of Idina Menzel – both of which seem quite a departure from Sara Bareilles’ hugely popular hits "Love Song", "Gravity" or most recently, "Brave".

It trashed Olivia Newton-John’s film career, halted the movie-musical revival, and was so critically reviled it led to the creation of the Razzies. How, then, could the stage version of hubristic 1980 flop Xanadu become a 2007 Broadway hit? The answer, as illustrated by Paul Warwick Griffin’s sublimely silly Southwark Playhouse production, is to laugh at itself first.