Sayaka Yamamoto  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". 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.