Loud (Korean: 라우드; RR: Laudeu; stylized in all caps) is a 2021 South Korean boy group survival reality show organised by JYP Entertainment and P Nation. It was a collaboration between Psy and J.Y. Park to form 2 boy groups: one under JYP Entertainment and another one under P Nation. The program involved 75 contestants from different countries with artistic talents competing for a spot in one of the 2 groups. The program premiered on June 5, 2021, and was broadcast every Saturday at 9 PM KST on SBS. During the finale on September 11, 2 groups were formed, with P Nation's group, TNX, later debuting in 2022, while JYP's group is set to debut in the first half of 2023.
 Auditions for the program opened on November 2, 2020, and closed on January 31, 2021, aiming at boys born after 2000 regardless of nationality.
 On April 26, 2021, the program was reported to premiere on June 5, 2021, on SBS.
 On May 6, the profile photos for J.Y. Park and Psy were revealed along with the premiere time, which would be on June 5 at 9 PM KST. On the same day, the first contestant, Daniel Jikal, was revealed through a teaser clip.
 On May 20, the other 74 contestants were revealed through teaser clips, including former 1the9 member, Lee Seung-hwan, and Mason Moon's brother, Maden Moon.
 On May 27, 2 contestants, Ham Mo-hyeob and Riku, left the program early due to their decision to withdraw from the program. As a result, the program would start with 73 contestants instead of the original 75.
 On July 24, Lee Seung-gi joined the program as Special Agent, a unique position whose task is to provide the remaining contestants with warmth, guidance, and support as they prepare for the finale.
 Unlike other Korean survival shows, this program aims at boys who are not trainees under an agency. The program also seeks contestants with artistic talents in various fields, including art creativity, singing, dancing, rapping, songwriting, arranging music, and playing musical instruments.
 The program starts with an interview back in 2020 involving producers J.Y. Park and Psy explaining the concept of the program. On April 8, 2021, they enter Loud Center at Cosmo 40 in Incheon for a tour of it. Loud Center is where contestants perform in front of the 2 producers. The next day, the contestants enter Loud Center and meet J.Y. Park and Psy for their first time. They later learn about the rules and procedures of the program. For each contestant, there are audition rounds they need to go through in order to participate in the rest of the program. For the first round, the contestant shows his skills while each producer has 3 levels on his chair, each of which makes the chair move up by one step. Once the chair reaches Level 3, he can press the Pass button, which belongs to each producer. If the 2 Pass buttons are pressed, the contestant passes and performs again with his charms, but with priority this time. The first producer to press the Pass button will scout the contestant to his company with a badge and the contestant will move on to the second round. 6 contestants performed first in this episode.
 The first round continues with performances by 6 other contestants. After 3 contestants performed, group performances by trainees under the 2 agencies were shown for an opportunity to become contestants. After the group performances, all trainees present in Loud Center became contestants and are no longer trainees under the 2 agencies unless they pass the first round. The episode continues with the first round being resumed.
 The first round continues with performances by 5 other contestants. After the 5th and 17th overall contestant performed, unaired performances by 18 contestants were shown with agency shown on each of them. The first round ends with Zo Doo-hyun and Nam Yun-seung being cast to JYP Entertainment after getting their second chance. Of all 73 contestants, 35 moved on to the second round while the other 38 failed the first round, resulting in them being eliminated. After the first round, Loud Center was moved into Alpensia Resort in Pyeongchang, Gangwon for the second round. In the second round, remaining contestants are split into 16 teams of 2 or 3 according to their new agency and perform a cover song. The team with the highest score wins and the member of the losing team with the lowest individual score will be nominated for elimination. Among the 8 nominees, the 5 nominees with the lowest total score will be eliminated. 2 teams performed first in this episode.
 The second round continues with performances by 8 other teams. At the end of the fifth battle, both performing teams were tied with a score of 191, so a new rule was added. If both teams of a battle are tied, all individual scores will be added up and the team with the highest total individual score wins and moves on to the third round. The episode ends with the results of the global fan poll from the previous week, with Lee Gye-hun taking 1st place.
 The second round continues with performances by 4 other teams. After the last battle, 3 out of 8 nominees were safe, which were Na Yun-seo, Lim Kyoung-mun, and Keiju Okamoto respectively. After the second round, all remaining contestants moved to JYP Entertainment, where they will be trained for the third round. Before the remaining contestants moved to JYP Entertainment, Loud Center was moved into Namdong Gymnasium back in Incheon for the rest of the program before the live rounds. In the third round, Park Jin-young will divide the contestants into teams and assign them into one of these three categories: Creative Music, Creative Dance, and Idol Group. At the end of each performance, Psy will score them out of 100 and each will be ranked individually by Park Jin-young. The team with the highest score on each category will be exempted from elimination and the contestant with the lowest ranks of their category will be nominated for elimination. The episode ends with the results of the global fan poll from the previous week, with Lee Gye-hun staying in 1st place.
 The third round continues with the result of the final team from the last episode. After the result of the final team, teams from the second and third categories perform. After the last performance, Psy will randomly choose 2 out of 6 nominees to be safe and move on to the next round, which were Zo Doo-hyun and Kim Jeong-min respectively. The episode ends with the results of the global fan poll from the previous week, with Lee Gye-hun staying in 1st place.
 After the third round, all remaining contestants moved to P Nation, where they will be trained for the fourth round. Before the fourth round, all remaining contestants will do a mini-mission, where they will showcase their hip-hop skills, whether it is rap, dance, or sing. In the fourth round, Psy will divide the contestants into teams and assign them into one of these two categories: Creative Music and K-Pop Group. At the end of each performance, Park Jin-young will score them out of 100 and each will be ranked individually by Psy. The team with the highest score on each category will be exempted from elimination. Three contestants from the second-place team (one contestant) and the third-place team (two contestants) with the lowest ranks from each team of their categories will be nominated for elimination. The episode ends with the results of the global fan poll from the previous week, with Lee Gye-hun staying in 1st place.
 Due to the 2020 Summer Olympics, this episode was delayed to 10:20 PM KST to avoid scheduling conflicts. The fourth round continues with performances by the remaining teams. The 3 nominees who will move on to the fifth round are Kim Min-seoung, Jang Hyun-soo, and Kim Dong-hyun. After the fourth round, it featured an appearance by Lee Seung-gi who will not only be the host of the finale but also the "Super Agent". The episode ends with the results of the global fan poll from the previous week, with Lee Gye-hun staying in 1st place.
 Due to the 2020 Summer Olympics, this episode was delayed to 10:45 PM KST to avoid scheduling conflicts. The episode starts with a flashback from the premiere episode. Later, the contestants meet Lee Seung-gi, the Super Agent. 3 days later, the fifth round begins. In the fifth round, 22 contestants are split into 3 groups and perform individually according to their voting rank. There will be a maximum of 10 finalists for each company. If each company has less than 10 finalists, those who don't have a casting card will be given a chance to do so. When the number of finalists for each company exceeds 10, those who don't have a casting card are eliminated. 5 contestants from Group 1 performed first. The episode ends with the results of the global fan poll from the previous week, with Lee Gye-hun staying in 1st place.
 Due to the 2020 Summer Olympics ending the day after, the rest of this program has returned to its normal schedule. The fifth round continues with individual performances by the remaining Group 1 members and Group 2. By the end of this episode, there are 4 finalists under JYP Entertainment while P Nation has 6. The episode ends with the results of the global fan poll from the previous week, with Keiju Okamoto replacing Lee Gye-hun in 1st place.
 The fifth round continues with individual performances by Woo Kyung-jun of Group 2 and all Group 3 members. After the final performance, Psy and Park Jin-young will deliberate and pick one or two nominees or neither to join the casting teams. Psy chooses Jang Hyun-soo and Koki Tanaka into his team while Park Jin-young only chooses Kang Hyun-woo leaving Lim Kyoung-mun, Kim Min-seoung, and Lee Su-jae to be eliminated. By the end of this episode, there are 9 finalists under JYP Entertainment while P Nation has 10. The episode ends with the results of the global fan poll from the previous week, with Lee Gye-hun replacing Keiju Okamoto in 1st place.
 This episode has been broadcast live as the live rounds begin in this episode. Before the live rounds, Loud Center was moved into Songdo Convensia in Incheon to broadcast the live rounds with live audience. In the live rounds, the 2 teams must compete against each other for a chance to win and debut. The winner of each live round will be decided by live votes from the program's website, the SBS app, text messages, and SuperStar (The SuperStar, P NATION, JYPNATION). After the winning team is announced, the eliminated members are decided by the agency and fan evaluations. For the agency evaluation, each producer decides if he will eliminate a member based on his feedback. For the fan evaluation, the members of both teams with the least votes are automatically nominated for elimination and the member of the losing team with the least votes will be eliminated. If there are no eliminated members according to the agency evaluation or a member that they need is eliminated, Psy and Park Jin-young can use a wildcard to exempt from elimination. The number of debuting members for each team will be decided based on the elimination results and those who survive until the last round on September 4 will debut under their agencies. A special gift will be given to the confirmed debuting members and their fans during the live finale on September 11.
 The first live round has 3 evaluations: Identity, Same Song, and Crossover. In Identity, the members perform together as a full team while making a remake or cover of a song by their labelmates. In the next 2 evaluations, the members perform in separate units assigned by both labels. In Same Song, the units perform the same song chosen by JYP and P Nation with a different concept. In Crossover, the units perform a mashup of 2 different songs with different concepts. P Nation wins the round with a total of 130,626 votes while JYP loses the round with a total of 85,245 votes, resulting in Kang Hyun-woo, Park Yong-geon, and Kim Dong-hyun being eliminated. The global fan poll was replaced with the individual voting results at the end of each live round, with Lee Gye-hun taking the spot for the most votes overall with 194,914 votes.
 This episode has been broadcast live as the live rounds continue in this episode. After the sixth round, the seventh round is introduced as the second live round. The second live round has 3 evaluations: Billboard, Girl Group, and School Concept. In Billboard, the members perform a cover of a successful song on Billboard Hot 100 using their English knowledge. As most members are learning English at the time they joined the program, they need to practice their English for their songs in order to impress Psy and Park Jin-young. In the next 2 evaluations, the members perform in separate units assigned by both labels. In Girl Group, the units perform a cover of a successful song by a K-pop girl group. In School Concept, the units perform a cover of a school-themed song while wearing student uniforms. P Nation wins the round with a total of 134,760 votes while JYP loses the round with a total of 104,195 votes, resulting in Lee Ye-dam, Yoon Dong-yeon, and Lee Dong-hyeon being eliminated. Park Jin-young used a wildcard to save Lee Dong-hyeon from elimination. The episode ends with the individual voting results for this round, with Keiju Okamoto replacing Lee Gye-hun in 1st place with 44,684 votes.
 This episode has been broadcast live as the live rounds end in this episode. After the seventh round, the eighth round is introduced as the third live round and the last round of the program. The last round has 2 evaluations: Fan's Choice and Retro K-pop. In Fan's Choice, the members perform a song chosen by the majority of fans and viewers using a concept that best fits the song. In Retro K-pop, the members perform a cover of a K-pop song that was released between the 1980s and 1990s. A special collaboration will be included and won't count as part of the evaluations, with Hyuna collaborating with P Nation and Stray Kids' Bang Chan, Changbin, and Han collaborating with JYP. JYP wins the round with a total of 75,464 votes while P Nation loses the round with a total of 63,407 votes, resulting in Zo Doo-hyun, Daniel Jikal, and Jang Hyun-soo being eliminated. Psy used a wildcard to save Jang Hyun-soo from elimination. The episode ends with the individual voting results for this round, with Koki Tanaka replacing Keiju Okamoto in 1st place with 48,387 votes.
 This episode has been broadcast live as the program ends with a special stage. The episode starts with an interview about the final members' journey after the program started. After 5 months and 2 days of intense competition, the program came to an end. The final members of the 2 groups are debuting together under their companies as they successfully survived until September 4. The group names will be announced and the 2 groups perform a song produced by each other's producer. The names of the 2 debut singles will be revealed and performed for the first time and are expected to be released in late-2021. The final ranks of all members will be revealed based on the voting results and the member finishing in 1st place will be crowned as the "MVP". Both groups perform "Walk Your Walk" before announcing the "MVP" to thank all fans and their staff during the program. Lee Gye-hun was announced as the program's "MVP" since he finished in 1st place overall. The program ends with the final members bidding a farewell to everyone involved in the program.
 Color key
 In the ratings below, the highest rating for the program was in red and the lowest rating for the program was in blue. Some of the ratings found have already been rounded off to 1 decimal place, as they were usually of lower rankings in terms of the day's ratings.