"Shum" (Ukrainian: Шум, transl. "Noise") is a song by Ukrainian electro-folk band Go_A. It represented Ukraine in the Eurovision Song Contest 2021 in Rotterdam.^[3][4] It is the second song sung entirely in Ukrainian to represent the country at Eurovision (the first being "Solovey" also by Go_A in 2020), but the first to compete in Eurovision due to the cancellation of the 2020 contest.

"Shum" qualified for the 2021 Eurovision final, where it finished in fifth place with 364 points. They were the runner-ups of the public vote, behind eventual winner Italy, with 267 points, including a maximum of 12 points from five countries.^[5] The Eurovision version of the song took the lead in the global Spotify Viral 50 daily list on 24 May 2021, where it stayed until 1 June, and led the weekly list on the week of 27 May.^[6] It entered the Billboard Global 200 on the week of 5 June, at position 158, becoming the first ever Ukrainian-language song to chart there.^[7] On the same week, it peaked at number 80 on the Billboard Global Excl. U.S.^[8]

The lyrics of this song is a variation of Ukrainian folk songs which were sung in the "Shum" folk ritual.^[9][10] The ritual involved a game and was performed in spring. According to some ethnographers, Shum refers to the god^[9] or personification of the forest.^[11] Etymologically, the name of the ritual probably comes from Proto-Slavic words šumъ ("noise") or šuma ("forest").^[12]

Lead singer Pavlenko grew up in Northern Ukraine, and the song is inspired by the folklore of that region.^[13]

On 22 January 2021, Go_A presented a music video for the song on the band's YouTube channel. Less than three weeks later, it reached 1 million views.^[14] Pavlenko commented that the video was made with a phone camera and, despite the apparent pandemic theme, their intent was to just experiment and "shoot some funny video".^[9] For the Eurovision version, they shot a new music video in a forest near the Chernobyl nuclear power plant.^[15]

The song was selected to represent Ukraine in the Eurovision Song Contest 2021 on 4 February 2021, after Go_A was internally selected by the national broadcaster UA:PBC. The previous year, they had won Ukraine's televised national selection. The semi-finals of the 2021 contest featured the same line-up of countries as determined by the draw for the 2020 contest's semi-finals. Ukraine was placed into the first semi-final, held on 18 May 2021, and performed in the second half of the show.