Diana closed the show for the Queen’s Jubilee concert (Picture: AP/Getty)

Tonight’s Platinum Jubilee concert for the Queen ended in spectacular fashion, with the one and only Diana Ross taking to the stage to bring the festivities outside Buckingham Palace to a close.

However, her performance of Chain Reaction sparked a mind-boggling reaction from some people watching the programme on BBC One at home… as they questioned why the singer was belting out a Steps track.

Yes, really.

Steps did, of course, famously release a song called Chain Reaction in 2001 which reached number two in the UK charts, with the music video depicting the pop group as paramedics and patients at a hospital.

But – for all of you somehow unaware of this up until now – the original version of the song was released by Diana 16 years earlier in 1985 as part of her 16th studio album Eaten Alive. Class adjourned.

The song, which was written by the Bee Gees, even achieved the former Supremes star her second number one on the UK charts.

We love us some Steps… but we need to set the record straight (Picture: Mike Prior/Getty Images)

While some were obviously aware that the track is a Diana classic, others less familiar with her discography were left scratching their heads as they questioned why she was performing a cover of a Steps song… several of whom were quickly corrected.

‘Never thought I’d see Diana Ross covering Steps,’ one person tweeted, while another wrote: ‘Just asked mum why Diana Ross is singing a Steps song….oops.’

Diana first released the song almost 40 years ago (Picture: Victoria Jones/PA)

Some admitted they had only just stumbled upon the discovery of Chain Reaction’s origin, with one Twitter user sharing: ‘Wait chain reaction was originally by Diana Ross not Steps? My entire life has been a lie.’

‘Anyone else only just found out Chain Reaction was a Diana Ross song before it was a Steps song? My life will never be the same,’ another put.

The number of people I’ve seen wondering why Diana Ross is singing a Steps song 🤣 Go to bed, you’re too young to still be up 🤦‍♀️ #PlatinumPartyatthePalace

— Alex Clayton (@AlexClayton_20) June 4, 2022

Can’t believe they’ve got actual Diana Ross (!!) covering one of the best Steps songs (!!!) #PlatinumPartyatthePalace

— Leigh Kirkham (@LeighKirkham) June 4, 2022

Wife’s just asked me why Diana Ross is singing the ‘Steps classic’ Chain Reaction 🥴 #PlatinumPartyatthePalace

— Sam Guest (@sguest26) June 4, 2022

Chain Reaction??? weird of Diana Ross to cover Steps?????

— Abi Slade (@abi_slade) June 4, 2022

wait chain reaction was originally by diana ross not steps?

my entire life has been a lie

— Miles🇺🇦 (@b0n0myt1res) June 4, 2022

One person imagined how incredible it would have been if Steps had been on stage as Diana’s backing vocalists… and we’re honestly heartbroken by the missed opportunity.

Earlier in the night, the concert opened with an adorable skit starring Queen Elizabeth II alongside Paddington Bear, as the pair bonded over afternoon tea and sandwiches.

Eurovision runner-up Sam Ryder stopped by to deliver another epic performance of his hit track Space Man, sparking comparisons to late Queen frontman Freddie Mercury.

More: BBC

Meanwhile, George Ezra was also among the performers, leaving viewers bemused when they realised the lyrics to one of his songs had been altered for the concert.

Sir Rod Stewart revealed during his time on stage that the BBC had ‘made him’ perform sporting favourite Sweet Caroline, while comedian Lee Mack used his time on stage to make a cutting dig about partygate, while Boris Johnson was sitting in the royal box.

The Queen’s Platinum Jubilee concert will be available to watch on BBC iPlayer.

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Queen Elizabeth II’s Platinum Jubilee 2022

Dust off your Union Jack bunting, Queen Elizabeth II’s Platinum Jubilee is well and truly upon us.

Taking place from Thursday, June 2, to Sunday, June 5, the celebrations mark Her Majesty’s record-breaking 70th year on the throne.

Across the UK, there will be street parties, concerts, and other special events attended by the Queen and senior members of the Royal Family.

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Visit Metro.co.uk’s Platinum Jubilee page for all the latest updates.