Hoda Kotb previews her Céline Dion interview with ET's Nischelle Turner. Hoda and Céline's full conversation airs on Tuesday, June 11, on NBC at 10 p.m. ET/PT. Hoda reflects on sitting down with the music icon for her first major chat about living with Stiff Person Sydrome (SPS) and the work she's putting in to get back on stage to perform. Hoda speaks to Céline battling the disease in secret for years, how she's adjusting to her new normal with a 'medicine cocktail' and 'totally terrifying' muscle cramps and spasms, and how the singer's fans and sons are her motivation to get better.