The One World: Together At Home telecast is off to a star-studded start with performances by Niall Horan, Adam Lambert, and Rita Ora. The benefit concert, which boasts a lineup curated by Lady Gaga herself, is a partnership between Global Citizen — the organization behind the Together At Home video webcast performances from Shawn Mendes, Camilla Cabello, Chris Martin, and more — and the World Health Organization to support health care workers during the global coronavirus pandemic.

Kesha joined the effort on Sunday (April 18) with a hopeful performance of "Rainbow," the title track from her third studio album, broadcasted from her living room. "I miss my fans and people so much," she said. "I miss giving my fans hugs."

As the singer sat at a colorful piano with a blazing fireplace behind her, a slideshow of children playing with chalk streamed past. The song's uplifting lyrics added a sense of hope to the show. "You'll find a rainbow, rainbow, baby," she sang. "Trust me, I know life is scary / But just put those colors on, girl / Come and play along with me tonight / You gotta learn to let go, put the past behind you / Trust me, I know, the ghosts will try to find you / But just put those colors on, girl."

Kesha appeared again later in the telecast, joined by a guitarist through video, for an emotional rendition of her 2017 single "Praying," also off Rainbow. The raw song, which she first released amid her lawsuit against a former label, is about triumphing through adversity, and finding eventual peace. That message ("You brought the flames and you put me through hell / I had to learn how to fight for myself") hits especially close to home amid the coronavirus pandemic.

The "Tik Tok" singer has been hard at work creating new music and delivering intimate performances while taking necessary social distancing measures. Kesha's One World: Together At Home debut came one day after her performance on the latest socially distanced episode of the Tonight Show on Friday, April 17, for which she brought a home recording of "Resentment," a track off her 2020 LP High Road. And earlier in the week, she revealed a playful mini-song about quarantine called "Home Alone," inspired by the film starring Macaulay Culkin.

Global Citizen's One World: Together At Home will continue into Saturday evening with a two-hour televised special uniting some of the biggest names in entertainment. The primary telecast will be co-hosted by late-night talk show hosts Stephen Colbert, Jimmy Kimmel, and Jimmy Fallon. Performers and presenters set to be featured include Gaga, Taylor Swift, Billie Eilish, Jennifer Lopez, Alicia Keys, Shawn Mendes, Lizzo – just to name a few of your many faves.