With the West End open again (thank goodness) and many a theatre fan more than ready to return to auditoriums, jukebox musicals are proving to be as popular as ever and if you fancy going to see a show full of songs that you know then London has plenty to offer. Mamma Mia is still going strong having just celebrated its 23rd birthday, with Tina: The Tina Turner Musical and &Juliet also pulling in the crowds. And now another joins the West End jukebox line up, lighting up the