Which musician involved in Christmas in Vienna VI died because of congestive heart failure?
Christmas in Vienna VI:  (The Erato label released the fourth Christmas in Vienna concert from 1995 that Domingo held with José Carreras and Natalie Cole.) Natalie Cole:  On December 31, 2015, Cole died at the age of 65 at Cedars-Sinai Medical Center in Los Angeles, California, due to congestive heart failure.
Natalie Cole