Jessie J and Tom Jones duet on 'You've Lost that Lovin' Feelin'' at the Grammys

LOS ANGELES, Feb. 9 (UPI) -- Jessie J and Tom Jones teamed up on the Grammy Awards stage Sunday night and belted out the classic song "You've Lost That Lovin' Feelin.'"

"This talented lady and I would like to sing one of the most beloved songs of the 20th century to honor one of the most successful songwriting teams ever and one of the most successful marriages, too. This is for Barry Mann and Cynthia Weil," said Jones.

"Congratulations to Cynthia and Barry for being honored this year with The Recording Academy's Trustees Award," Jessie J added.

As Jessie J and Jones -- who are 26 and 74 respectively -- performed the song, audience members like Chrissy Teigen and John Legend, and members of the pop rock band Haim, were seen singing along in their seats.