Sayaka Yamamoto

On April 17, 2019, Sayaka Yamamoto released her first solo single "Ichirinsou". On September 4, 2019, Yamamoto released her second single "Thorn". On September 17, 2019, Yamamoto announced on her YouTube channel that her third single "Tsuioku no Hikari" would be released on November 20, 2019, with her third album α (Alpha) following on December 25, 2019.

On July 30, 2018, Sayaka Yamamoto announced in NMB48 LIVE TOUR 2018 in Summer that she would be graduating from NMB48. On October 27, 2018, her graduation concert titled "SAYAKA SONIC~Sayaka, Sasayaka, Sayonara, Sayaka~" was held at Expo’70 Commemorative Park.

On October 4, 2017, Sayaka Yamamoto released her second solo album "identity".

On April 13, 2016, she graduated from her concurrent position in AKB48's Team K and returned as a full-time member of NMB48.

On October 26, 2016, Sayaka Yamamoto released her first solo album "Rainbow". It debuted at number 3 on the weekly Oricon singles chart.

On February 10, 2015, Sayaka Yamamoto released her second photobook titled "SY" which sold 42,779 in its first week of sales according to Oricon and topped the Oricon sales charts. The high sales volume prompted a second-printing of the gravure photobook.

On February 24, 2014, it was announced that Yamamoto would hold a concurrent position in AKB48's Team K. On February 26, Yamamoto participated in AKB48's 35th single "Mae Shika Mukanee" as a senbatsu member. On March 26, NMB48 released their 8th single "Takane no Ringo" for which Yamamoto served as the sole center. On May 21, Yamamoto participated as a media senbatsu member for AKB48's 36th single "Labrador Retriever" and also served as the center for B-side "Itoshiki Rival" with Jurina Matsui as a member of Team K. This marked Yamamoto's first participation in an AKB48 single as an AKB48 member. On June 7, Yamamoto ranked 6th in AKB48's 6th general election with 67,916 votes, marking her first entry into the "Kami 7". As a result, Yamamoto participated as a senbatsu member on AKB48's 37th single "Kokoro no Placard". Yamamoto was also the only NMB48 member to rank in senbatsu for this year. On November 5, NMB48 released their 9th single entitled "Rashikunai", for which Yamamoto participated in as a senbatsu member. This was the first single since "Zetsumetsu Kurokami Shoujo" to not be centered by Yamamoto. However, she centered the B-side "Kyusen Kyotei" with Yuki Kashiwagi, and also sang on the duet "Tomodachi" with fellow first generation member Nana Yamada. On November 26, AKB48 released their 38th single "Kibouteki Refrain" on which Yamamoto participated as a media senbatsu member. She also served as center for Team K's "Hajimete no Drive", with Jurina Matsui on the same single.

On February 20, 2013 Yamamoto participated in AKB48's 30th single "So long!" as a senbatsu member. On May 22, Yamamoto participated in AKB48's 31st single "Sayonara Crawl" as a media senbatsu member. On June 8, Yamamoto ranked 14th in AKB48's 5th general election with 51,793 votes. The release of AKB48's 32nd single "Koisuru Fortune Cookie" on August 21 marked the first time Yamamoto entered an AKB48 senbatsu through the election. On June 19th, NMB48 released their 7th single "Bokura no Eureka" for which Yamamoto served as the sole center for. On October 2, NMB48 released their 7th single "Kamonegix" for which Yamamoto served as center for alongside Miyuki Watanabe. On October 30, Yamamoto participated in AKB48's 33rd single "Heart Ereki". The senbatsu members for this single performed as a band called "THE G.FINGERS" and were given English aliases. Yamamoto once again acted as a member of the chorus and assumed the English name "Rosanna". On December 11, Yamamoto participated on the B-sides on "Mosh & Dive" and "Kimi to Deatte Boku wa Kawatta" on AKB48's 34th single "Kimi no Hohoemi wo Yume ni Miru".

Yamamoto was given her first solo A-side center on NMB48's third single "Junjou U-19", which was released on March 8, 2012. This was also the first NMB48 single to include a solo song, entitled "Jungle Gym", which was sang entirely by Yamamoto. On March 15, Yamamoto was a part of the lineup for AKB48's 25th single "GIVE ME FIVE!", in which the senbatsu members played as a band called "Baby Blossom", for which Yamamoto sang as part of the chorus. On May 9, NMB48 released fourth single "Nagiichi" for which Yamamoto served as center with Miyuki Watanabe. On May 23, Yamamoto, with fellow NMB48 members Miyuki Watanabe and Eriko Jo, was included as a part of the media senbatsu for AKB48's 26th single "Manatsu no Sounds Good!". On June 6, Yamamoto ranked 18th in AKB48's 4th general election with a total of 23,020 votes and as a result sang on the B-side "Nante Bohemian" as a member of "Undergirls" on AKB48's 27th single "Gingham Check". On August 8, NMB48 released their fifth single "Virginity" for which Yamamoto once again served as the sole center. She also served as the center for B-side "Bokura no Regatta" on the same single. On October 31, Yamamoto participated as a senbatsu member for AKB48's 28th single "UZA". On November 7, NMB48 released their 6th single "Kitagawa Kenji", for which Yamamoto served as center with Miyuki Watanabe. On November 21, Yamamoto released her first photobook entitled "Sayagami", which sold over 55,000 units. The photobook was released on the same day as Miyuki Watanabe's photobook, and was marketed as a battle between the two members, which was ultimately "won" by Watanabe. On December 5, AKB48 released their 29th single "Eien Pressure", for which Yamamoto sang on the B-side "HA!" and served as center for along with Miyuki Watanabe. This marked the first time Yamamoto had served as a center for a B-side on an AKB48 single.

Yamamoto participated in auditions for the first generation of NMB48, and was selected to debut in the group along with 25 other girls. On March 10, 2011 Yamamoto was selected as one of 16 members which would debut as Team N, of which she was selected to serve as captain. Team N made their debut at the NMB48 theater on March 21, 2011. In May of the same year, Yamamoto and fellow Team N member Miyuki Watanabe were the first NMB48 members to be selected for an A-side senbatsu with the release of AKB48's 21st single "Everyday, Katyusha". On June 9, Yamamoto was the only member of NMB48 to rank in AKB48's 3rd general election. She placed 28th with 8,697 votes and as a result sang on the B-side "Dakishimecha Ikenai", on AKB48's 22nd single "Flying Get". On July 20, NMB48 made their major single debut with "Zetsumetsu Kurokami Shoujo", for which Yamamoto was selected as a senbatsu member. Despite not being the center for the A-side, Yamamoto served as the center for both B-sides "Seishun no Lap Time" and "Boku ga Maketa Natsu". On October 19, NMB48 released their second single entitled "Oh My God!", for which Yamamoto served as center with fellow Team N member Nana Yamada. This marked the first time Yamamoto had been chosen as a center for an A-side senbatsu. She also served as a center on the B-sides "Boku wa Matteru", "Kesshou" and "Uso no Tenbin" (with Nana Yamada) on the same single. On October 26, Yamamoto participated in her second A-side senbatsu with AKB48 on their 23rd single "Kaze wa Fuiteiru".

Sayaka Yamamoto (山本 彩 , Yamamoto Sayaka, born July 14, 1993) is Japanese singer and songwriter most widely known for her work as a former member of the Japanese idol girl group NMB48, where she served as the leader of the group and as the captain of Team N. She is also a former member of AKB48's Team K.