Guest Stars Radio City Rockettes as Themselves Pentatonix as Themselves Alec Baldwin as Himself Kate McKinnon as Herself Dolly Parton as Herself Josh Groban as Himself Tony Bennett as Himself Trisha Yearwood as Herself Garth Brooks as Himself Sarah McLachlan as Herself The Roots as Themselves Tori Kelly as Herself Neil Diamond as Himself Jordan Smith as Himself Anthony Hamilton as Himself HamilTones as Themselves