Blake Shelton and Shakira to Perform on ACMs

Tonight with Tony & Kris, Blake Shelton recalls his experience working with Shakira on their ACM duet "Medicine." Upon working with her, he found that she uses multiple studios for back-up singers, alternative tracks and completely different projects all at the same time.

Blake was highly impressed with Shakira's work ethic, saying that he could never work at such a frenetic pace.

Blake and Shakira will perform the song on this Sunday's ACM Awards. Read more about Blake and Shakira's performance here...

Previously announced performers include Jason Aldean, Eric Church, Brett Eldredge, Toby Keith, Justin Moore, Kip Moore, Blake Shelton, Keith Urban and Lady Antebellum with Stevie Nicks.

The 49th Annual ACM Awards, co-hosted by Blake and Luke Bryan, airs live from the MGM Grand Garden Arena on Sunday, April 6, at 8 p.m. ET on CBS.

If you're not familiar with the song "Medicine," check out the lyric video below.