Taped at Radio City Music Hall, this two-hour special features tributes from a long conga line of artists, including Lady Gaga, Elton John, Billy Joel, Diana Krall, k.d. lang, Stevie Wonder, Rufus Wainwright, Leslie Odom Jr., and more. It also features appearances by Robert De Niro, Kevin Spacey, John McEnroe – and Alec Baldwin, whose most famous Saturday Night Live impersonation of the moment is Donald Trump, but who for years did a wicked Tony Bennett on SNL. Here, he does his impersonat