Mahoko won the first prize in General category at the 12th Shimoda International Music Competition in Japan, also she received Harris Award as the special Jury Award.　

Mahoko got awarded the GOLD medal in Professional category at 2022 Grand Maestro International Music Competition - Special Commemorative Edition in honor and memory of Queen Elizabeth II.

Mahoko won the silver Award in Concert Artist Division, Professional Category at the Global International Music Competition 2021 (International Online). 

Mahoko got awarded the First Prize in Professional Solo Category at Quebec Music Competition in Canada (International Online this year). 

Mahoko got awarded the Second Prize in Young Artist Category (Voice) in the Canadian International Music Competition 2020-2021. 

Mahoko was humbled to not only compete in the France Music Competition 2°-2020 but to win 2nd Place in Vocal Professional Category. 

Mahoko won the First Prize in Voice, Category E at 17th Muse International Music Competition in Greece. 

Mahoko got awarded the Second Prize in Vocal Category XI at The North International Music Competition in 2020. 

As a studio artist, Mahoko is going to join the Atlantic Music Festival in Maine this summer.

As a vocal fellow, Mahoko is going to join the Bay View Music Festival in Michigan this June.

Mahoko won the First Prize in Senior category at International Music Competition Grand Prize Virtuozo in London this year. She has been invited to perform in the Award ceremony at Elgar Room in Royal Albert Hall in September.

As one of four soloists, Mahoko will be performing The Everyday Lullaby: Unfurlings and Solidarities by Elizabeth Ditmanson, as part of the concert at the  Women, Feminists, Music: Transforming Tomorrow Today, joint conference of the International Alliance for Women in Music organization (IAWM) and the Feminist Theory and Music15 (FT&M15) in Boston, MA, USA.

​Date: June 6–9, 2019

As one of the representatives of the international student speaker, Mahoko will join a discussion for Faculty and Staff at both Berklee Collage of Music and Boston Conservatory.

Sponsored by the Liberal Arts Department - RSVP liberalarts@berklee.edu

​Thursday, March 28th, 2019. 1-2pm

Music Video of "Wings to Fly" by 100 Voices 1 Heart will be released on September 21st [World Peace Day] →November 23rd, 2018!!  

​Mahoko's first Solo concert in Japan was held in Tokyo on July 1st, 2018.

"谷口万穂子ソロコンサート-現代アメリカ芸術歌曲を中心に-"

Mahoko had been accepted into Young Artist Program of Connecticut Lyric Opera, Summer in 2018. She was cast as a role of Cleopatra in Giulio Cesare by Handel.

Mahoko was cast as Jade Boucher in an opera Dead Man Walking by Jake Heggie in the Boston Conservatory's production, Winter in 2017.

Mahoko was accepted into Summer Institute for Contemporary Performance Practice program (SICPP) at New England Conservatory. She was selected as a SICPP fellow to perform solo at the Isabella Stewart Gardner Museum. 

Mahoko made her debut as soprano soloist in Haydn's Mass in Time of War for the 60th anniversary season of the Rhode Island Civic Chorale and Orchestra concert in 2017, Providence.

As a Japanese representative singer, Mahoko will be performing in 100 Voices 1 Heart at Hatch Memorial Shell

 September 11th, 2019.