The group was founded by children and Masa Fukuda in 2001 after he composed the song "It Just Takes Love" for the 2002 Winter Olympics in Salt Lake City, Utah.

In 2003, the choir sang the Christmas song "Innocence of Youth" and won the John Lennon International Music Award after singing in a competition for Yoko Ono.

In 2014, One Voice received national attention for their rendition of the Disney song "Let It Go", starring Lexi Walker and Alex Boyé.

Brigham Young University student, Masa Fukuda, heard about a contest for nearby composers to write music for sale as soundtracks during the 2002 Winter Olympics in Salt Lake City, Utah.

[2] He and Jeannine Lasky wrote the song "It Just Takes Love" on an impulse, not expecting to win because he felt that others like Kurt Bestor and the Mormon Tabernacle Choir were far better than he.

[2] According to The Salt Lake Tribune's David Burger, Fukuda's aim is "to create a nurturing, tolerant environment with high standards and a commitment to singing uplifting songs".

[2] Around 2003, Fukuda's nonagenarian grandmother visited an Osaka, Japan, store and noticed a poster that had John Lennon's photo.

They invited Fukuda, singer Jay Williams, and 12 members of the Studio A Children's Choir (a precursor to One Voice) to sing the song in Japan.

[14] 100 members of the choir, including Walker, auditioned on June 22, 2014, singing Ellie Goulding's "Burn".

[18] Composed of children ages 4–18,[4][19][20] One Voice at the beginning had practices in Fukuda's apartment where he would set up 45 folding chairs in his living room.

[6][14] Because of the choir's size and the geographical distribution of its members, some of whom commuted from Wyoming and Idaho, it changed to having two practices a week.

[24] They have collaborated with Ben Rector,[25] David Archuleta,[6] Jenny Oaks Baker,[4] Sam Cardon,[7] Peter Breinholt,[6] Barry Manilow,[6] Janice Kapp Perry,[4] The Piano Guys,[6] Jon Schmidt,[26] Garth Smith,[27] Ryan Shupe,[6] Vocal Point,[28] and Mat & Savanna Shaw.

[29] In February 2012, the first members of the choir who had participated in the Olympics performed at the 2002 Winter Games Tenth Anniversary Legacy Event.

[30] The group performs at charitable events including those hosted by Operation Smile and the Ouelessebougou Alliance.

[6] Fukuda told the Deseret News in 2015 that he was raised in Japan where choirs were primarily about "technique and preciseness".