Glenn Siebert has enjoyed a career performing a wide range of repertory in opera and concert, appearing with many of the world's most acclaimed orchestras, opera companies and music festivals, including the New York Philharmonic, the Boston Symphony, Cleveland Orchestra, Philadelphia Orchestra, Los Angeles Philharmonic, Royal Flanders Philharmonic, Hamburgische Staatsoper, San Francisco, Washington, Santa Fe operas and Ravinia, Blossom, Tangelwood and Oviedo festivals.
He has worked with some of the world’s finest conductors including Kurt Masur, Roger Norrrington, Robert Shaw, Leonard Slatkin, and Christoph Eschenbach.
As a recitalist Glenn has appeared with such groups as the Newport Music Festival, New York Festival of Song, the Speedside Festival in Canada and in Scotland at the Blair Music Festival performing a variety of programs, from Schubert and Schumann to Britten and Argento.
His interest in early music has led to performance with such original instrument ensembles as Philharmonia Baroque, Boston Baroque, Chicago's Music of the Baroque and Anima Eterna in Brussels. In 2004 he founded the acclaimed Magnolia Baroque Festival, a biennial festival featuring leading early music specialists.
Glenn's recordings include Mendelssohn's Paulus with the Royal Scottish Orchestra, Schubert's Mass in E flat with the Atlanta Symphony and Beethoven's 9th Symphony with Anima Eterna, Berlioz’s Lelio with the Milwaukee Symphony, Handel’s Acis and Galetea with the Seattle Symphony and Nothing Divine is Mundane, Songs of Virgil Thomson.
He has been on the faculty of The University of North Carolina School of the Arts since 1991.
Glenn Siebert is the quintessential lyric tenor with a lovely warm tone and the clearest enunciation this writer has ever heard. Of the opening set of four poems by diverse poets put to music by George Whitefield Chadwick (1854-1931), I was most moved by the second, “When Stars Are in the Quiet Skies.”
Classical Voice North Carolina, Aug. 2012
Glenn Siebert's strong lyric tenor brought subtlety as well as stentorian power to Uriel's coloratura runs. Jette and Siebert blended exquisitely in the lovely duet "From Thee O Lord".
-Mimai Herald, November 21, 2010
Ten selections from Die Schöne Müllerin song cycle by Franz Schubert (1797-1828) only whetted the appetite to hear tenor Glenn Siebert do the whole cycle. Siebert's years of experience showed in his choosing to gauge and reduce the power of his voice for performing art songs in an intimate space. His winning timbre was combined with aptly dramatic phrasing, exact intonation, and flawless diction.
-Classical Voice North Carolina, Aug.15, 2010