In an online tribute, David Miller, Sebastien Isambart and Urs Buhler recalled Baridon as a “beautiful soul”.
“We are deeply pleased to announce the passing of our friend and colleague Carlos Marin,” the statement said. “He will be missed by his friends, family and fans. There can be no other voice or spirit like Carlos.”
“The four of us have been together for 17 years on this incredible journey of Il Divo. We miss our dear friend. We hope and pray that his beautiful soul may rest in peace.”
Before their tour was postponed due to “illness”, Marin was performing with the band in the UK in December.
The singer’s death comes just days after the group confirmed on Twitter that he had been admitted to hospital.
The nature of his illness has not been released and the cause of his death has not been confirmed.
He has released 10 studio albums with the band, including three UK number one albums: “Il Divo,” “Ancora” and “The Promise.”
In 2006, Ilvivo sang the official anthem of the 2006 FIFA World Cup, “The Time of Ever Lives” with R&B singer Tony Broxton.
In 2015, when Mountain Lake appeared on PBS, Marin said he was “proud” to be able to communicate with people through music.
“Being a singer is a good thing. You can provide people with a link to a song and use your voice and your singing voice to tell a story. That’s a good thing, and that’s what I’m proud of.”
Marin was married to French singer Geraldine Larosa – better known by her stage name Innocence until 2009.