It has been a year for tearful farewells: Friday night, Darlene Love sang David Letterman’s favorite Christmas song “Christmas (Baby Please Come Home)†for the 22nd and final time on The Late Show. (Watch a supercut of all her previous visits here.) The 73-year-old singer first recorded the song back in 1963 for Phil Spector’s Christmas album and has warmed our holiday spirits on Letterman since. “I said I would never sing it again on another show,†she said to Letterman before her piano-topping performance. “This is where it will end.â€