Stewart Cameron was born in Auckland, New Zealand where he gained a Bachelor of Arts Degree from Auckland University, majoring in Italian Literature and Language . Two years after graduating, at the age of 22, he won his country's biggest opera competition, the N.Z. Herald Aria, performing two Verdi baritone arias. He then moved to Sydney to take up a place at The Opera School at the N.S.W. Conservatorium of Music, where he studied under the direction of Myer Fredman.

This period enabled him to work for three years in an environment more like that of a small professional opera company than a tertiary study institution, and enabled him to study more than a dozen major baritone roles and to take leads in operas such as "La Clemenza di Tito" and "Pelleas and Melisande".

After graduating , Stewart moved to London to study voice with David Harper and later studied repertoire with ( now internationally-renowned ) conductor Simone Young in Cologne. During this time Stewart performed regularly on the opera and concert stage, including taking the title role in Mozart's Le Nozze di Figaro for the Cornwall Festival.

Since making Brisbane his home, Stewart has performed with Wellington City Opera (NZ) as Papageno in The Magic Flute, as well as performing as a soloist with Q.S.O., Q.P.O., OPERATIF!, Qld Pops and Lyric Opera of Qld ( now Opera Queensland ). Stewart performed the role of John Sorrel to critical acclaim in Brisbane City Opera's highly successful production of The Consul for the 1996 Brisbane Festival . In late 1997 he took the part of the consul, Sharpless, in Madama Butterfly for the 4MBS Coorparoo Festival of Fine Music , a role he reprised when the production was given a mainstream season in Brisbane's Suncorp Theatre in 1998.

For the last few years, Stewart has concentrated his energies on performing with OPERATIF! , Queensland's proudly independent company of singers, enjoying the wonderful opportunities to regularly perform a diverse range of repertoire, from Broadway musicals to Lieder, French art song, 20th Century opera ,and everything in-between.

Stewart was one of the driving forces behind the initial planning of OPERATIF! back in 1994, and was artistic and business manager of the 1999 4MBS Festival of Classics. In the four months of the contract, Stewart developed the Festival to a level not previously seen. He secured a Naming Rights Sponsor, increased Cash sponsorship by 1600 % , and forged strong relationships with Media organisations such as the Courier-Mail and Channel 7, which resulted in a 50% increase in ticket sales.

In May 2006 Stewart was one of the two featured vocal soloists in the Qld Pops Orchestra's acclaimed performances of "The Best of British" in the Concert Hall, QPAC. , under the baton of Barrie Gott.

Stewart now also combines his busy performance schedule with a private singing teaching studio which enables him to pass on more than 20 years of professional experience.