How do you solve a problem like...no, not Maria, Candide? Musicals are loved for their scores – and Leonard Bernstein’s one for this really is a cracker – but they’re held together by their books, i.e. the script/dramatic context that makes audiences care about the characters and plot. Filled to bursting with good intentions, Matthew White’s exuberantly rough’n’tumble new Menier production does its damnedest but there’s no disguising the fact that Lillian Hellman’s adaptation of Voltaire’s satire of inexhaustible optimism remains tension-free. 

In the season of goodwill a new musical based on Bret Easton Ellis’ notorious novel American Psycho might earn itself the subtitle “NOT the Christmas Show” - but when the composer is Duncan Sheik, he of the sensational Spring Awakening, and the director Rupert Goold, fresh into his artistic stewardship of the Almeida Theatre, all bets are off. There’s even a number entitled “Mistletoe Alert” - so the season of rampant consumerism might well prove just the time to launch one of the most anticipated musicals of this or any season.

No one ever said putting on a show was easy, least of all the names (a lot of them famous, quite a few not) on compulsively watchable view in The Sound of Musicals. Channel 4's reality-TV probe into the world of art, commerce, and high kicks is sure to be catnip to theatre folk the world over, even if the sight of Broadway actor-turned-Chichester "star" Christopher Fitzgerald walking his tentative way across a tightrope in his role as PT Barnum soon becomes a visual metaphor for the performer's ever-precarious chosen profession.

Beyond being made in the 1930s, being a British production, being a musical and two having the same director, nothing links these four films. But the randomness of this double DVD set brings bucketloads of charm.

How many times can a director re-work the same show and still come up with something fresh, gripping and memorable? This is James Brining’s third version of Sondheim’s killer thriller musical Sweeney Todd. He produced an award-winning version in 2010 at Dundee Rep. He turned to it again last month for his first production since becoming artistic director at West Yorkshire Playhouse. Now, he has re-worked it for the in-the-round confines of the Royal Exchange, initiating a trans-Pennine collaboration between the two theatres.

Forever breaking into song and dance, musicals are fun, fun, fun. They are primarily what folks go to for uplifting entertainment, are they not? Actually, many of the best aren't anything like that simplistic. Opening at the Young Vic last night, The Scottsboro Boys is no mere barrel of vacuous laughs, though it is comical and buoyant along the way.

“Love and pain is like peace and war - you want one you have to have the other.” It’s a line that pretty much sums up From Here to Eternity. The title of James Jones’s novel and the classic movie which it spawned gets rather lost in the new musical from Tim Rice, Stuart Brayson, and Bill Oakes.

Once upon a time, there were two cultures, and they were at odds. A forested wilderness stretches between the kingdoms of Sealand and Lagobel, as we glean from the childishly-drawn, giant map that serves as a front cloth for the NT's new musical spectacular – directed by Marianne Elliot and opening in the Lyttelton last night. The map shows, on one side of the wilderness, Sealand’s coastal realm with winding rivers and a chateau bristling with turrets, all in shades of blue.

There will be some who will sneer at this film, but ignore them. Director Dexter Fletcher has fashioned a wonderfully enjoyable movie from a play by Stephen Greenhorn (who also wrote the script), in which a good-natured story about family, love and friendship is set to the music of The Proclaimers.

They called Rita Moreno the triple threat – she could dance, act and sing. But even her spirited performance as Anita in West Side Story could not satisfy United Artists: the doomy low notes of "A Boy Like That" were considered out of her range, and the number was ghosted by Betty Wand, one of the scores of unknown singers who rescued on-stage stars from ignominy.