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Focus EP was released on October 20, 2025 as the first Korean EP by Hearts2Hearts. Released under the label SM and Kakao, the album has a total of 6 tracks with 2 being lead singles, 3 B-sides, and 1 previously released lead single prior to the promotions for the album as an additional b-side. It had been 238 days or 7 months and 26 days since their previous album release, The Chase - single album. Focus EP features members A-na, Carmen, Ian, Jiwoo, Juun, Stella, Ye-on, and Yuha at the average age of 17.4 years old. Focus EP has a total of 6 tracks featured on the album, with no previous releases from other albums. The B-side Style had been released as a lead single for a single release but no albums featured. The single is not considered a lead single for this EP. The tracks are: Lead Singles: Focus | Pretty Please || B-side: Apple Pie | Flutter | Blue Moon | Style || Focus EP has a total of 1,719 words with the majority of the album being sung in English at 53.5% (920 words...

  Dumb Dumb  is a lead single from Red Velvet released on September 9, 2015 for their first studio album The Red as the first track. Written by Seo Ji-eum and Kim Dong Hyun, with composition and arrangement by LDN Noise, Deanna Dellacioppa, Taylor Parks, and Ryan S. Jhun. It had been 184 days since their last single release of Ice Cream Cake in March of the same year. Dumb Dumb features members Irene, Joy, Seulgi, Wendy, and Yeri at the average age of 20 years olds. Dumb Dumb has a total of 470 words with 31.7% (149 words) in Korean versus 68.3% (321 words) in English. The song is broken down majority sung by All, on paper, with 256 words (54.5%), versus 214 words (45.5%) divided between the members. The average is 44.2 words with a standard deviation of 12.2 words and a margin of error of 5.5 words. Member Irene has the highest number of words while member Yeri has the least. Rank Irene - 57 words Joy - 54 words Wendy - 49 words Seulgi - 37 words Yeri - 24 words Irene...

  Style  was released on June 18, 2025 by Hearts2Hearts as a non album lead single. The song would later go on to be featured as a B-side on their EP Focus as the sixth track. The song is written by Kenzie, with composition and arrangement by Mike Daly and Mitchell Owens. Adrian McKinnon and Sara Forsberg also took part in the composition of the song. It had been 114 days, or 3 months and 25 days since their previous release of The Chase. Style features members A-na, Carmen, Ian, Jiwoo, Juun, Stella, Ye-on, and Yuha at the average age of 17.4 years old. Style has a total of 401 words with 43.1% (173 words) in Korean versus 56.9% (228 words) in English. 170 words (42.4%) were sung in unison by all members while 231 words (42.4%) were split between them. The average was 41.1 words with a standard deviation of 14.7 words and a margin of error of 5.2 words. Member Carmen had the highest number of words while member Jiwoo and Juun had the least. Rank Carmen - 70 words Yuha ...

Kissing You by Girls’ Generation was a lead single for the album Girls’ Generation (2007) and was on the reissue album Baby Baby as the fifth track. Released on November 1, 2007 the song was written, composed, and arranged by LeeOn with Kwon Yoon-Jung taking part in the writing of the lyrics. It had been 73 days since their previous single, Girls’ Generation had been released, also featured from the same album. Kissing You features members Hyoyeon, Jessica, Seohyun, Sooyoung, Sunny, Taeyeon, Tiffany, Yoona, and Yuri at the average age of 17.6 years old at its initial release time. Kissing You has a total of 233 words with 182 (78.1%) sung in Korean versus 51 words (21.9%) sung in English. About 50.2% (117 words) sung by all members in unison with 49.8% (116 words) sung in individual sections. The average between the nine members is 12.9 words with a standard deviation of 8.7 words and a margin of error of 2.9 words. Member Seohyun had the highest amount of words while member Yoon...

Baby Baby  by Girls’ Generation was initially released on November 1, 2007 on their debut studio album Girls’ Generation (2007). It was used as the lead single from the re-issue album Baby Baby to promote the song. Baby baby was written, composed and arranged by Hwang Seong-je. Baby Baby features members Hyoyeon, Jessica, Seohyun, Sooyoung, Sunny, Taeyeon, Tiffany, Yoona, and Yuri at the average age of 17.6 years old. Baby Baby has a total of 204 words with 82.8% (169 words) sung in Korean with 17.2% (35 words) in English. 60 words (29..4%) sung by all members with 144 words (70.6%) are split into individual sections. The average between the nine members is 16 words with a standard deviation of 6.5 words and a margin of error of 2.1 words. Member Jessica had the highest number of words while members Hyoyeon and Sooyoung had the least. Rank Jessica - 27 words Taeyeon - 24 words Yoona, Yuri - 18 words Tiffany - 17 words Seohyun - 14 words Sunny -12 words Hyoyeon, Sooyoung - 7 W...

Pretty Please a lead single by Hearts2Hearts was released by October 20, 2025 as the second lead from the EP, Focus (Track #3). Lyrics and composition were written by Saay from Soultriii, with Composition and arrangement by Deez, and Soulfish both also from Soultriii. It had been 125 days since their previous single of Style. Pretty Please features members A-na, Carmen, Ian, Juun, Jiwoo, Stella, Ye-on, and Yuha at the average age of 17.4 years old. Pretty Please has a total of 376 words with 127 words (33.8%) in Korean versus 249 words (66.2%) in English. Breaking down the song further, about 38% (143 words) were sung by all members in unison with 62% (233 words) split between the eight members. The average is 37.6 words while the standard deviation is 7.5 words and a margin of error of 2.7 words. Member Juun has the highest amount of words while member Ian has the least. Rank Juun - 48 words Ye-on - 45 words Yuha - 41 words Stella - 40 words A-na - 37 words Carmen, Jiwoo - 34 wor...

Stay  is a lead single released on November 1, 2016 as the second track from their single album Square Two by BLACKPINK. Lyrics, composition and arraignment were written by Teddy with Seo Won-jin helping compose and arrange the song. It had been 85 days since their previous releases of Boombayah and Whistle. Stay features members Jennie, Jisoo, Rose, and Lisa at the average age of 19.8 years old. Stay has a total of 341 words with 194 words (54%) in Korean versus 157 words (46%) in English. About 31.7% (108 words) were sung by all in unison with 68.3% (233 words) divided between the four members. The average is 58.3 words with a standard deviation of 9 words and a margin of error of 4.5 words. Jennie had the highest amount of words while Jisoo had the least. Rank Jennie - 67 words Rose - 66 words Lisa - 55 words Jisoo - 45 words Jennie - Highest Word Stay has a track time of 3 minutes and 50 seconds with a total singing time of 3 minutes and 28 seconds. 30 seconds (14.4%) w...

Girls’ Generation  by Girls’ Generation was released on November 1, 2007 as a Lead single from the album Girls’ Generation (2007) and it’s reissue Baby baby (Track #1). The song was a remake from the writer and original singer, Lee Seung-Chul. Composition is by Song Jae-Joon with arrangement by Kenzie. It had been 92 days since their last release Into the New World. Girls’ Generation features members Hyoyeon, Jessica, Seohyun, Sooyoung, Sunny, Taeyeon, Tiffany, Yoona and Yuri at the average age of 17.6 years old. Girls’ Generation has around 176 words with 148 words (84.1%) in Korean versus 28 words (15.9%) in English. About 30.% (53 words) were sung by all members in unison while 69.9% (123 words) divided between the nine members. The average is 14.4 words with a standard deviation of 10.6 words and a margin of error of 3.5 words. Member Taeyeon had the highest number of words while member Yuri had the least. Rank Taeyeon - 36 words Jessica - 30 words Seohyun - 15 words Su...

Focus  by Hearts2Hearts was released on October 20, 2025 as the lead single on their EP Focus. Written by Kenzie, the composition and arrangement are by Michael Matosic. Composition also included David Wilson, Dewain Whitmore, and Hailey Collier. Dwilly, also participated in the arrangement. It had been 25 days since their previous release of Pretty Please. Focus features members A-na, Carmen, Ian, Jiwoo, Juun, Stella, Ye-on, and Yuha at the average age of 17.4 years old. Focus has a total of 263 words with 24% (63 words) in Korean versus 76% (200 words) in English. About 87 words (33.1%) are sung by all members in unison while 176 words (66.9%) were divided between the members. The average per member is about 29.8 words with a standard deviation of 10.2 words and a margin of error of 3.6 words. Member Yuha had the highest number of words while members Jiwoo and Juun had the least. Rank Yuha - 43 words Ye-on - 41 words Carmen - 34 words Stella - 33 words Ian - 30 words A-na...

Playing with Fire  by BLACKPINK was one of the lead singles from their second single album Square Two as the first track. Released on November 1, 2016 the song was written and composed by Teddy with R.Tee also assisting in the composition. Arrangement was done solely by R.Tee. It had been 85 days since their previous releases of Boombayah and Whistle. Playing with Fire features Jennie, Jisoo, Rose, and Lisa at the average age of 19.8 years old. Playing with Fire had 220 words with 70.9% (156 words) in Korean versus 29.1% (64 words) in English. The song is sung entirely in individual sections. The average is 55 words with a standard deviation of 20.3 words and a margin of error of 10.1 words. Member Lisa had the highest number of words while member Jisoo had the least. Rank Lisa - 89 words Jennie - 51 words Rose - 43 words Jisoo - 37 words Lisa - Highest word  Playing with Fire had a track time of 3 minutes and 17 seconds with a total singing time of 2 minutes and 22 s...

Automatic by Red Velvet was released on March 14, 2015 as the track number 2 on the EP Ice Cream Cake. Lyrics were written by Choi So-Young with composition and arrangement by Daniel “obi” Klein and Charli Taft. The track features members Irene, Seulgi, Yeri, Joy, and Wendy at the average age of 20 years old. Automatic is the first lead single to feature member Yeri, as the album is the first to feature the new member. Automatic has 243 words with 55.1% (134 words) in Korean versus 44.9% (109 words) in English. The song is sung majority in individual sections with 146 words (60.1%) divided among the members while 97 words (39.9%) sung in unison. Average between the members is 30.2 words with a standard deviation of 18.7 words and a margin of error of 8.4 words. Member Wendy has the highest number of words while member Irene has the least. Rank Wendy - 55 words Seulgi - 45 words Joy - 33 words Yeri - 10 words Irene - 8 words Wendy - Highest Word Automatic has a time of 3 minutes...

Next Level  by Aespa was released on May 17, 2021. The song was a remake of the song of the same name by artist A$ton wyld. Next Level was originally released in 2019 for the movie Hobbs and Shaw (a part of the Fast and Furious franchise). Korean lyrics by Yoo Young-jin with compositing of the music by Yoo Young-jin, Adam Mcinnis, Mario Marchetti, and Sophie Curitis. Arrangement credit is to Yoo Young-jin, Adam Mcinnis, and Mario Marachetti. The song features members: Ninging, Karina, Giselle, and Winter. At the time of the release, the average age of all four members of the AESPA was about 20.25. When you break down the song into the number of words, Apesa sings about 364 words total with the average per member being 86.3. Standard deviation is 14.1 with a margin of error of 7.1. The song is sung in English with 200 words at 54.9 percent while 164 words were in Korean at about 45.1 percent. Overall the song is sung by the majority as individuals with 321 words (88.2%) be...

Ice Cream Cake by Red Velvet was the second lead single from their EP Ice Cream Cake as the first track. Released on March 16, 2015, the song was written by Jo Yoon Kyung and Kim Dong-hyun. Composition and arrangement was by Hayley Aitken, Sebastian Lundberg, Frederick Haggstam, and Johan Gustafsson. Ice Cream Cake was released two days after Automatic. Ice Cream Cake featured members Irene, Wendy, Seulgi, Joy, and Yeri at the average age of 20 years old. Ice Cream Cake had a total of 435 words with 195 words (55.8%) in Korean versus 240 (55.2%) in English. The song is sung majority in unison with 65.3% (284 words) while only 34.7% (151 words) divided between the members. The average is 30.2 words with a standard deviation of 14.3 words and a margin of error of 6.4 words. Member Joy had the highest number of words while member Yeri had the least. Rank Joy - 52 words Irene - 39 words Wendy - 27 words Seulgi - 23 words Yeri - 10 words Joy - highest word count Ice Cream Cake had a t...

Forever by Aespa was released originally as a non-album song then, later featured as a b-side on the album Girls (track #8), released in 2022. The song is a remake of the song that was written and released as a christmas song for SMTown by Yoo Young-jin in 2000. The song was written, composed, and rearranged by Yoo Young-jin himself. It had been 80 days since their previous release of Black Mamba. Forever features members Giselle, Karina, Ningning, and Winter at the average age of 20.3 years old. Forever has 176 words with 150 words (85.2%) in Korean versus 26 words (14.8%) in English. 8% (14 words) sung in unison while the remaining 92% (162 words) divided between the four members. The average was 40.5 words with a standard deviation of 5.7 words and a margin of error of 2.8 words. Member Winter had the highest number of words while member Giselle had the least. Rank Winter - 59 words Karina, Ningning - 40 words Giselle - 33 words Forever has a track time of 4 minutes and 58...

Whistle by BLACKPINK was released at the same time as Boombayah as a dual, lead single, debut on August 8, 2016. It’s the first track on the single album of Square One written, composed, and arranged by Teddy, and Bekuh Boom. Future Bounce also participated in the composition and arrangement. Whistle features members Jennie, Lisa, Jisoo, and Rose at the average age of 19.8 years old. Whistle has a total of 341 words with 59.8% (204 words) in Korean versus 40.2% (137 words) in English. About 19 words (5.6%) sung in unison with 322 words (94.4%) divided between the four members. The average is 80.5 words with a standard deviation of 30.1 words and a margin of error of 15.2 words. Member Jennie had the highest number of words while member Jisoo had the least. Rank Jennie -122 words Lisa - 97 words Rose - 52 words Jisoo - 51 words Jennie - Highest Word Count Whistle has a track time of 3 minutes and 31 seconds with a total singing time of 3 minutes and 6 seconds. 5 seconds (2.7%...

Be Natural was released on October 13, 2014 as a single on a non-album. The song features future NCT member Taeyong singing the rap of the song. Be Natural was first released by S.E.S. in December of 2000. The song was written, composed, and arranged by Yoo Young-Jin, including the remake by Red Velvet. It had been 71 days since their last release Happiness. The song features Red Velvet members Seulgi, Irene, Wendy, and Joy along with Taeyong (future NCT Member) at the average age of 19.8 years old. Be Natural has a total of 316 words with 81.6% (258 words) versus 18.4% (58 words) in English. About 101 words (32%) were sung by all Red Velvet members in unison, while 215 words (68%) were split among Red Velvet and Taeyong. The average between was 43 words with a standard deviation of 31.3 words and a margin of error of 14 words. Taeyong had the highest number of words, Red Velvet member Wendy had the highest number of words just behind him, while member Irene had the least. Rank...