BREAKING: Michael B Tretow dead: ABBA icon dies as band issues tearful tribute

ABBA have been left in mourning following the death of their sound engineer.

The family of Michael B Tretow have confirmed he has passed away at the age of 80.

He was a giant in Swedish music and the sound engineer for Abba as well as being a musician himself.

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Both Abba stars Björn Ulvaeus and Benny Andersson have already reacted to the sad news.

Benny told Swedish tabloid Aftonbladet: "You meant more to us four in ABBA than anyone else. I hope and believe that you felt it throughout all the years that have passed since we worked (and continuously laughed) in the studio. Our music lives on, it seems, and you are the one who made it timeless.”

Bjorn added: "His significance for ABBA cannot be overestimated. He was a warm, generous person and a good friend. Thanks, Micke, for all the laughs!”

The Swedish Herald which reported his death late on Tuesday night highlighted how when Tretow was a sound engineer at Metronome Studio and in the 1970s, Björn Ulvaeus and Benny Andersson let him become Abba's sound engineer.

He then worked with all of Abba's albums – except for "Voyage" from 2021 – and is considered to have created the classic Abba sound.

His death is likely to mean the four Abba members are reunited again although this time for very sad reasons if they all attend his funeral.

They are rarely photographed together, although did all pose together in 2022 at the launch of their Abba voyage concert experience.

Michael is survived by son Rasmus Tretow and his wife Malin Hertzman.