Kelly Clarkson, Demi Lovato among performers for 'The Voice' season 13 finale
NBC/YouTube

With "The Voice" season 13 drawing to a close, NBC has announced via press release which guest artists will help fill Tuesday's two-hour season finale with musical performances before the winner of the singing competition is announced - and they're a whole lot of people that you've seen before.

Kelly Clarkson will make yet another return to "The Voice" stage to perform her newest single "Medicine." Clarkson, who has been a frequent musical guest on the show and also appeared as a battle rounds advisor for Team Blake, is appearing while the series continues to hype up her arrival as a coach in "The Voice" season 14 that will start in February.

Also joining the show are funk rockers N.E.R.D., the band fronted by former "Voice" coach Pharrell Williams. They'll perform their new single "Lemon," while Charlie Puth will be back for his second consecutive season. After having performed "Attention" on "The Voice" just seven months ago, Puth is returning with his new single "How Long."

Sia returns after having been an advisor to Team Christina in the show's first season and performing as a musical guest in both 2015 ("Alive") and 2016 ("Cheap Thrills"). For her third appearance in three years, she'll sing "Snowman" from her holiday record Everything Is ChristmasDemi Lovato will perform her current hit "Tell Me You Love Me."

Last but certainly not least, season 12 winner Chris Blue will get his customary chance to return to "The Voice" and show TV viewers what he's been up to since they voted him to victory this spring. NBC has enlisted his coach Alicia Keys to make an appearance just to introduce him—an appearance that's not that surprising, given that Keys is joining Clarkson for "The Voice" season 14.

Music fans who have followed "The Voice" since its debut six years ago may be feeling a sense of deja vu looking at NBC's press release, as aside from Lovato, every act has performed on the show before (although Williams did it as a solo artist). But that aside, the show is locking in the biggest names available with music to promote, so viewers will be hearing the latest singles on the singing competition's biggest night - exactly what one would expect.

"The Voice" finale airs Tuesday at 9 p.m. on NBC. You can watch a preview by playing the video above.