Sergio Mendes‘ cause of death has been revealed — the Brazilian musician died from respiratory failure.

According to the death certificate, obtained by TMZ, the official cause of death is acute hypoxemic respiratory failure … a condition that occurs when there’s not enough oxygen in the body.

The condition can be brought on by pneumonia … and Sergio’s death certificate says aspiration pneumonia is an underlying cause here. This specific type of pneumonia is a lung infection resulting from food, liquid or other substances being inhaled into the lungs.

Sergio also suffered from a chronic lung disease that contributed to his death … and his family has said he had been struggling with long-term COVID.

TMZ broke the story … Sergio died September 5 in Los Angeles, and the death certificate says he passed at Providence Cedars-Sinai Tarzana Medical Center … and he’s since been cremated.

Sergio won 1 Grammy Award, 2 Latin Grammys, and was nominated for an Oscar in 2012 for the song “Real in Rio” featured in the animated movie “Rio” … and the document lists his occupation as “music producer” and shouts out his 65 years in the music industry.