"Brian Asawa is the most important countertenor in the world today." Opera Today, June 2009......

In 1991, Brian Asawa's career was launched when he became the first countertenor to win the Metropolitan Opera National Council Auditions. He was the first countertenor Adler Fellow for San Francisco Opera, and is the only countertenor in history to win the Placido Domingo "Operalia" International Opera Competition. He was also awarded Seattle Opera's Artist of the Year Award for his portrayal of Arsamene in Handel's Xerxes.

Since 1993 he has appeared in opera houses world wide singing signature roles such as Tolomeo in Handel's Giulio Cesare for Seattle Opera, Metropolitan Opera, Bordeaux Opera, Opera Australia, Royal Opera House, Covent Garden, Paris Opera at Palais Garnier, Madrid's Teatro Real, Barcelona's Gran Teatre del Liceu, New Israeli Opera, and Hamburg Staatsoper. Other roles include: Prince Orlofsky in Johann Strauss' Die Fledermaus for San Francisco Opera and San Diego Opera; Arsamene in Handel's Serse for Los Angeles, Cologne, and Santa Fe Operas, and Grand Théâtre de Genève; Farnace in Mozart's Mitridate for Theatre de la Monnaie, Brussels; Belize in Peter Eotvos's Angels in America; Mascha in Eotvos's Tri Sestri and Ottone in Monteverdi's L'Incoronazione di Poppea for Hamburg, the last also for Glimmerglass Opera; Nero in Poppea for Opera Australia; Endimione in Cavalli's La Calisto in Brussels; Fyodor in Mussorgsky's Boris Godunov for Netherlands Opera and Teatre del Liceu in Barcelona; Orfeo in Gluck's Orfeo ed Euridice for Nederlandse Opera; David in Handel's Saul for Bayerische Staatsoper, Munich; Oberon in Britten's A Midsummer Night's Dream for San Francisco and Houston Grand Operas and Teatro di San Carlo in Napoli; and Baba the Turk in Stravinsky's The Rake's Progress for Swedish Television One and San Francisco Opera.

Most recently, he has appeared as Prince Go-Go in a new co-production of Le Grand Macabre by Ligeti with Brussels La Monnaie/Opera di Roma, and Carmina Burana with the London Symphony Orchestra in Daytona Beach.

Future engagements include Le Grand Macabre in Adelaide, Australia, a semi-staged version of Angels in America with the BBC Symphony Orchestra at the Barbican Centre, Handel's Israel in Egypt with the Collegiate Choir of New York,  Carmina Burana in Ontario, Canada and a Three Countertenors concert in the Grote Zaal of the Concertgebouw in Amsterdam.

His discography includes solo CDs with Sony/BMG ranging from Elizabethan lute songs to song cycles by Ned Rorem and Jake Heggie. Operatic recordings include Farnace in Mozart's Mitridate for Decca, Oberon in Britten's A Midsummer Night's Dream for London, and Arsamenes in Handel's Xerxes for Conifer. He also appears in Handel's Messiah for Deutsche Grammaphon.