United States at the Amerivision Song Festival 2021

The United States of America participated in the Amerivision Song Festival 2021 in Antofagasta, Chile, with CG5 performing the song "Good to Be Alive". The American entry was selected through the 61st edition of the national final American Song Contest, organized by the Public Broadcasting Service (PBS) and the National Broadcasting Company (NBC).

The United States later performed in position 14 in the final and placed 1st out of the 26 participating countries, winning the contest with 496 points: 257 from the juries and 239 from the televoting.

At Amerivision
According to Amerivision rules, all nations with the exceptions of the host country and the "Big Five" (Canada, the United States, Mexico, Brazil and Patagonia) are required to qualify from one of two semi-finals in order to compete in the final; the top ten countries from each semi-final progress to the final. As a member of the "Big Five", the United States automatically qualified to compete in the final on 11 December 2021. The United States was set to perform in the second half of the final.

Final
Following the conclusion of the second semi-final, the shows' producers decided upon the running order of the final. The running order for the semi-finals and final was decided by the shows' producers rather than through another draw, so that similar songs were not placed next to each other. The United States was drawn in position 14, following the song from the Guianas and preceding the song from Argentina.

The American performance featured CG5 in a yellow astronaut costume standing in front of and interacting with a projection screen which displayed animated images relating to the song's lyrics. He was joined by five backing vocalists/instrumentalists (ukulele player, guitarist, bassist, saxophonist and drummer) in differently-colored astronaut costumes from the second verse onward. During the instrumental break and bridge, a pre-recorded sequence was shown depicting CG5 and his backing vocalists as angels and then stars swirling around him leading to the bridge of the song.

At the end of the song, CG5 appeared wearing, in addition to his costume during the rest of the performance, glowing contact lenses, a glowing yellow wig and stars drawn on his face and hands, achieved through black light, as well as a glowing star surrounded by several smaller glowing stars on his chest. The glowing effect had been used for CG5's prior performance at the 2020 American Song Contest. The five backing vocalists/instrumentalists that joined CG5 during the performance were associate YouTubers Caleb Hyles (guitar), Euria Sin (ukulele), Will Alex Ryan (saxophone), Igor Gordienko (bass) and Griffin Lewis (drum), who also joined him during the national final performance. CG5 also played a keytar throughout the song until it was removed during the instrumental break.

The United States placed first in the final: receiving 257 points from the juries and 239 from the televoting, winning 496 points overall. This became the United States' 13th victory in the contest, their last victories in the 21st century having been in 2001, 2008, 2011 and 2015. This was the first time an American contestant of European national origin had won the contest (CG5 is English by nationality).