Katharine McPhee gets emotional over Bee Gees tribute

Katharine McPhee reveals what it meant to her to be asked to perform "Emotion" at The Recording Academy’s 40th-anniversary celebration of the Bee Gees and the landmark Saturday Night Fever film soundtrack. Watch part of her tribute performance here and don't miss "Stayin' Alive: A GRAMMY Salute To The Music Of The Bee Gees" on Sunday, April 16 at 8–10 p.m. ET/PT on CBS.