A big birthday deserves a big show and they don’t get much bigger than ABBA Voyage at the specially constructed ABBA Arena in London’s Queen Elizabeth Olympic Park. Discretion prevents me from broadcasting the number of the big birthday. Let’s just say the lady turned 21 again. After a Champagne breakfast at the White Horse generously provided by our jolly landlord – the birthday girl’s other half – the fancily-dressed voyagers piled onto the charabanc to the Smoke. More generosity from the innkeeper saw some of us three sheets to the wind before we hit the M11.

London traffic, as always, was bumper to bumper, but we made the performance – just. And what a performance. It took my breath away. Truly the best light and sound show I’ve ever seen. ABBA split in 1982 and, unlike some ancient rockers who seem to be on perpetual tour, the quartet wisely decided they were way too long in the tooth to squeeze into those skin-tight costumes and hit the road again. So ABBA Voyage is the next best thing – or the first best thing depending on your point of view – a virtual concert featuring ‘ABBAtars’.

At first, it felt a bit weird clapping to a series of holograms, but the show is so technically brilliant, so convincing, that it’s easy to suspend belief and party hard to the fast-paced set of timeless ABBA classics. And who doesn’t like a bit of ABBA at a party? We all had a ball, particularly the birthday girl – because she’s amazing too.