Sharon Mansur was born in 1996 in Haifa, Israel, and started classical piano at eight. At sixteen she bought her first keyboard and joined a local metal band, and after her Israel Defense Forces service she began studying jazz at the Rimon School of Music before finishing her degree at the Jerusalem Academy of Music and Dance. The years that followed were spent touring rather than recording under her own name: she worked with Yossi Fine & Ben Aylon, the Jerusalem Orchestra East & West, singer Lala Tamar, and the Israeli progressive-metal band Orphaned Land, appearing on the band's A Heaven You May Create (30th Anniversary / Live In Tel-Aviv) in 2023.

Her first releases under her own name arrived in 2021, on two different labels and in two different idioms. Cairo Dreaming, billed to her electronic alter ego SHASHA, came out on the Israeli electronic imprint Camel Riders Records; the same year, The Gap appeared on the Tel Aviv indie label Kamea, a set of original solo piano compositions she has described as inspired by jazz and film, built for extended, improvisation-heavy reinterpretation in concert. A second SHASHA EP, Purple Shades, followed on Camel Riders in 2022, and in 2024 she released Live Sessions, a collaboration with pianist Eitan Reiter, on the ESC label.

In 2025 she formed a piano-and-synth trio with double bassist David Michaeli and drummer David Sirkis and signed to ACT Music, the Munich-based label built by Siegfried "Siggi" Loch into one of European jazz's most consequential small imprints. The trio's debut, Trigger, was released on ACT that year: eight originals, all written and produced by Mansur, recorded with Michaeli and Sirkis throughout. Michaeli, already a member of the ACT-signed Israeli trio Shalosh, brought the record a direct connection to the label's existing Israeli jazz roster. Cover artwork came from artist Katja Strunz, with design by Loch himself. ACT subsequently carried the album's opening track, "Outside In," onto its house sampler Magic Moments 18 In The Spirit Of Jazz later the same year.

Trigger drew reviews from jazz publications on both sides of the Atlantic and across continental Europe: All About Jazz in the United States, Jazzhalo in Belgium, Marlbank in the United Kingdom, and Jazzthetik and Jazz Thing in Germany, alongside coverage in the French press. Mansur's own promotion of the record describes it in exactly those terms, crediting the trio format with jazz at its center alongside classical, Middle Eastern and electronic elements. She continues to tour internationally with the ACT Agency booking her dates.

All About Jazz's Neil Duggan, reviewing Trigger on its release, called the record "an intriguing jazz hybrid" built from Mansur's "classical piano, heavy metal, progressive rock, electronica and Middle Eastern" influences, and singled out her classical training and progressive-rock leanings as the strongest forces shaping the eight tracks; he noted moments, like the interruption of "February"'s classically inflected piano by a sudden progressive-rock passage, where the fusion of idioms is more jarring than seamless, and others, like the title track, where it converges cleanly. Jazzhalo and Marlbank both placed the record closer to jazz-rock and fusion than to a conventional acoustic jazz trio date, with Marlbank drawing a comparison to Hiromi Uehara and Connie Han while judging Mansur "less a Chick Corea type influenced player than Han." AllMusic classifies her under jazz, international and new age genres, with post-bop, Central/West Asian traditions and European folk among the styles it associates with her catalog. Her improvisational vocabulary, shaped by the same formal jazz training that produced Michaeli's and Sirkis's own careers, sits inside a sound she has spent a decade building from classical technique, teenage metal chops, and the Middle Eastern material she absorbed touring with the Jerusalem Orchestra East & West.