 In 2015, Clayton was featured on two tracks of Coldplay's album "A Head Full of Dreams".Throughout her career as a backup singer, Clayton's singing can be heard on songs by Pearl Bailey, Phil Ochs, Burt Bacharach, Tom Jones, Joe Cocker, Linda Ronstadt, Carole King, and on several tracks from Neil Young's debut album.Clayton is often credited as having recorded with Elvis Presley but her name does not appear in Elvis sessionographies.