A semi-staged concert performance of a musical is a little like a third trimester ultrasound scan. You should see the anatomy in development, the shape of what is to come and, most importantly, discern a heart beating at its centre. But you can’t tell if what will arrive some time later will be a bouncing baby or a sickly child. So it is with this iteration of a new British musical, Treason. 

Kathy and Stella Solve a Murder!, Summerhall ★★★★★

How old is Emile de Becque? Perhaps because my first Emile was the 1958 film version’s Rossano Brazzi, my vision of the lonely French plantation owner in the South Pacific during the Second World War has been coloured by that casting: a visibly greying, slightly stiff man with correct manners who conforms to the vague description “middle-aged”.

LJ's dream has come true - she has her very own wine bar. Unfortunately for us, it turns into a bit of a nightmare.

If jukebox shows occupy one end of the musical theatre spectrum and Stephen Sondheim's masterpieces the other, Sister Act The Musical is somewhere in-between.

There's further training, shall we say, still needed on 101 Dalmatians, the much-delayed show that marks the second consecutive musical this summer at the Open Air Theatre, Regent's Park, following their revisionist Legally Blonde.

This is the summer, in musical theatre terms at least, of the revival of the revival, with several recent remountings of iconic titles (South Pacific, now in London previews) getting a renewed lease on life, alongside the likes of My Fair Lady, Crazy for You, and Sister Act on hand in or near London to swell the ranks of the familiar yet further.

The 2001 Reese Witherspoon-starring film Legally Blonde, upon which Heather Hach, Laurence O’Keefe and Nell Benjamin’s peppy Broadway musical is based, was something of a Trojan horse: a bubblegum-pink comedy with a feminist spine.

First staged in 2018, Bartlett Sher’s Lincoln Center Theater production of My Fair Lady is London’s latest import from Broadway, coming here hot on the heels of Oklahoma!. In returning to the city where its story is set, Lerner and Loewe’s iconic musical from 1956 receives a dashing treatment from a cast and creative team in their top form.

Barry Gibb was at the considerable peak of his era-defining songwriting powers when he provided the song that played over the opening titles of the iconic 1978 film, so it's a wise decision by director, Nikolai Foster, to go straight into "Grease is the Word" after a brief prologue.