Kacey Musgraves is rumored to perform her fan-favorite song "Rainbow" at the 2019 Grammy Awards on Sunday, Feb. 10.

Musgraves shared a picture to her Instagram Story of a holographic rainbow piano, which could be a nod to the song and a hint that she'll perform it at the Grammys. Music News & Rumors Twitter account reported the speculation of song choice via social media earlier this week.

The country starlet won two 2019 Grammy Awards during the premiere ceremony's telecast, though she wasn't there to collect. Musgraves took home the songwriters' award for Best Country Song for "Space Cowboy" along with co-writers Luke Laird and Shane McAnally, who accepted in her honor. She also won for Best Country Solo Performance of "Butterflies."

The 61st Annual Grammy Awards air on CBS at 8PM ET. In addition to a solo performance, Musgraves will take the stage on Sunday evening to perform as part of an all-star tribute to Dolly Parton that will feature Little Big Town and Maren Morris.

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