WATCH: Kacey Musgraves Performs 'Rainbow' On 'Late Night With Seth Meyers' Austin, TX, United States / KOKE FM localnews@socastdigital.com Jun 22, 2018 | 7:22 AM Kacey Musgraves performed the song “Rainbow” from her latest album, Golden Hour on Late Night With Seth Meyers on Wednesday, June 20th. Watch her performance in the video clip above.