Her debut solo single, "Bottled Up" featuring Ty Dolla Sign and Marc E. Bassy, was released in September 2018.

She performed in public for the first time at age seven singing the national anthem, and sang at local events in Orange County.

She was ultimately brought-back to the competition, along with Ally Brooke, Normani, Lauren Jauregui, and Camila Cabello, to form the girl group Fifth Harmony.

The group also contributed music to the soundtrack of the animated film Hotel Transylvania 2, performing their song "I'm in Love with a Monster".

[15] Fuse's website included Jane on an article of the faces of future Asian and Pacific history, naming the most promising entertainers of the region in 2017.

[20] In August 2018, it was announced that Jane had signed a solo record deal with Hitco Entertainment, founded by L.A. Reid and Charles Goldstuck.

[21] She released her debut solo single "Bottled Up" featuring Ty Dolla Sign and Marc E. Bassy, along with its lyric video, on September 21, 2018.

[22] She released the song's music video and performed the single on The Tonight Show Starring Jimmy Fallon in October 2018.

[31] In May, Jane officially released "Retrograde" for digital download and streaming, followed by "SZNS" featuring A Boogie wit da Hoodie in July.

Titled the Dinah Jane World Tour, it would begin in April 2020 in Arizona and travel to other US locations before performing in selected cities in Europe.

[42] Since her comeback, Jane has also released the collaborative singles "Falling in Love" with JKing on September 22, 2023[43] and a remix of "Sway" with Myshaan on February 10, 2024.

[48] Her musical influences are Christina Aguilera,[49] Patti LaBelle, Beyoncé, Leona Lewis, Mariah Carey and Etta James.