Tony Bennett has Alzheimer’s disease, his wife Susan Benedetto revealed on “CBS This Morning.” The 94-year-old legendary singer has kept the diagnosis under wraps since 2016. “We came home one night after a show and said to me, ‘Susan, you know, I can't remember the musicians’ names,’” Benedetto said. Bennett is most lucid when singing his classic songs and never forgets a single lyric, his wife said. During the coronavirus pandemic, Bennett has been recording concerts from home. #InsideEdition