Jessie J Performs ‘You’ve Lost That Lovin’ Feelin” with Tom Jones at 2015 Grammy Awards [Video]Jessie J Performs ‘You’ve Lost That Lovin’ Feelin” with Tom Jones at 2015 Grammy Awards [Video]Jessie J joined the legendary Tom Jones to sing a legendary song by a legendary songwriting team at the 2015 Grammy Awards tonight (Feb. 8)Karen LanzaKaren Lanza