Overview

• Michael B. Tretow, ABBA's longtime sound engineer, passed away at 80, with his family confirming the news and requesting privacy regarding the cause of death.
• All four ABBA members issued heartfelt tributes, highlighting his profound influence on their music and his role as a close friend and collaborator.
• Tretow was instrumental in creating ABBA's signature 'Wall of Sound,' employing innovative recording techniques like tom-heavy drum mixing and three-microphone piano setups.
• Fans and colleagues often referred to Tretow as the 'fifth member' of ABBA due to his defining contributions to their global success.
• He is survived by his wife, Malin Hertzman, and son, Rasmus Tretow, who confirmed his death to Swedish media.