Through this music she exhibits emotional depth, to-die-for scat skills, incredible pitch control and shading, strong songwriting skills, intuitively elastic phrasing, soulful bearing, and a great range.” [4] She is compared to Sarah Vaughan, Betty Carter and Dianne Reeves, singing ballad standards, cabaret music, Scat singing, and blues.

[9] In her teens she toured Europe with a Big Band, and by 16 she performed at the Montreux, North Sea and Umbria Jazz Festivals.

At the age of eight to ten she was performing gigs at banquets, black tie affairs and a guest at local radio stations.

[10] Thomas has performed with many well known jazz artists such as Clark Terry, Wycliffe Gordon, Houston Person, Mulgrew Miller, Wynton Marsalis, Russell Malone, The Legendary Count Basie Orchestra, Kurt Elling, Michael Feinsten, T.K.

She has performed with many musicians such as; Clark Terry, Curtis Fuller, Wycliffe Gordon, Victor Goines, Junior Mance, Charles Tolliver, Reggie Workman, Frank Wess, Paul West, Rene Marie, Fred Anderson, Von Freeman, Jimmy Owens, Norman Simmons, Art Baron, Curtis Fuller, Winard Harper, Ulysses Owens, The Amigos Band, and Houston Person.

[15] Dominick Farinacci (trumpeter), Nick Grinder (Trombone), Tivon Pennicott (tenor sax), Greg Lewis (organist), Kyle Poole (Drums), Ethan Mann (Guitar), Yi - Ting Chiang (Violin), Marvin Sewell (guitar), Ryan Berg (bass), Malik Washington (drums), Russell Malone (guitarist), Carmen Lundy (vocalist), Winard Harper (drummer), Nathan Davis (saxophonist), Dianne Reeves, Catherine Russell (singer), Greg Lewis (pianist), and alto saxophonist Patrick Bartley (alto saxophonist), Dion Parson/21st Century Band, Fred Anderson (musician) (saxophone), and James Hurt (piano).

[16][17] The Brianna Thomas Quartet musicians include; Conun Pappas (piano), Rob Adkins (bass), John Davis (drums), Linton Smith (trumpet), Joe Wiggan (taps), Greg Ward (alto), Riza Printup (harp), Brianna Thomas (vocals).

Thomas teaches 'Jazz in American History' and 'Today for Jazz For Young People' programs, which educates students in New York City schools.