It is the lucrative show that allows Abba fans to experience a concert from the group as they were in their prime – or rather, through digital 'Abbatars' and a glittering ten-piece band.

But despite having raked in £300 million in ticket sales, The Mail on Sunday has discovered that the producers of Abba Voyage are cutting costs.

They have replaced the live band – which accompanies the four singing avatars of Abba – with cheaper musicians.

The show has attracted more than 2.5 million visitors since it opened in 2022 at the Abba Arena in London's Queen Elizabeth Olympic Park, and it has contributed £1.5 billion to the economy.

The original line-up of musicians – to accompany the avatars of Agnetha Faltskog, Bjorn Ulvaeus, Benny Andersson and Anni-Frid Lyngstad – was put together by former Klaxons singer James Righton, husband of Keira Knightley.