Oscar producer Gil Cates announced Monday that Parton will sing her nominated original song, "Travelin' Thru" from "Transamerica" while York will perform "In the Deep," which she wrote with Michael Becker and was featured in the film, "Crash."
The song is featured on York's debut album "Wicked Little High," which comes out Feb. 21 on EMI.
The Academy Awards will be presented March 5 at Hollywood's Kodak Theatre.
Pistorius testifies he didn't consciously pull trigger when he shot girlfriend
'Happy' fan videos make Pharrell cry [VIDEO]