Celine Dion has spoken out to pay tribute to two fellow performers who tragically died with an emotional message on Instagram. The Canadian singer - who recently had to postpone her Las Vegas residency due to ill health - shared some moving words as she described the sad loss of Renée Martel and Il Divo's Carlos Marin.SEE: Celine Dion shares health update as she announces heartbreaking newsHer message read: "Last weekend we sadly lost two incredible artists.