Alois Glassner received his first musical training while still in High School in Melk Abbey (Austria). This was followed by extensive studies at the Universität (formerly University) für Musik und darstellende Kunst Wien in church music, organ, orchestra conducting, composition and vocal pedagogy and choral conducting at the Swedish "Chorpapst" Eric Ericson in Stockholm and London. Already during his studies, he made up his own, highly successful concert choir with a name: The Hugo Distler Choir, founded by him in 1987, which evolved in the decade of its existence, into one of the outstanding concert choirs of the country.
1993 Glassner was appointed Director of church music at the traditional Wiener Augustinerkirche. With orchestral musicians of the great Viennese orchestras, soloists from national and state opera and a powerful choir, he formed a high-caliber church music ensemble, which was highly appreciated not only for the exemplary performances of great classical Sunday high masses, but also unfold an active concert career with the great oratorio literature. In the twelve years of its activity in the Augustinian Church, Glassner conducted in more than 700 performances almost all popular classical and romantic repertoire of church music, but also performed early music, rarities and contemporary works. In these years, a number of commissioned works were also premiered by him at the Augustinian church.
In 2003 Alois Glassner took over the artistic direction of the Salzburg Bach Choir. Under his direction, the ensemble became the fixed partner of the major festivals (Salzburg Festival, International Mozart Week, Whitsun Concerts) and worked in recent years very successfully with orchestras such as the Vienna Philharmonic, the Mozarteum Orchestra Salzburg, the Camerata Salzburg and renowned conductors such as Riccardo Muti, Sir Roger Norrington, Ivor Bolton, Marc Minkowski, Leopold Hager, Gerd Albrecht, among others. For the chorus of “Haendel's Theodora” staged production, in the summer 2009, Glassner and the Salzburg Bach Choir were greeted with anthemic reviews.
Since 1991 Alois Glassner also teaches at the Universität (formerly University) für Musik und darstellende Kunst Wien and holds the leadership of the Webern Chamber Choir of the University since 1999. In 2004 he was appointed Professor of conducting at the Institute Anton Bruckner, which he presides as head of the institute. He passes on his knowledges at numerous seminars and master classes in Germany and abroad. In 2008 he founded at the Music University of Vienna, the "Wiener Choir School" with the aim of enabling gifted young people general musical and vocal experience through choral singing and vocal training and lead them into a musical life.
Versatility runs through Glassner’s artistic career like a red thread: After being organist, accompanist and an active singer, he developed into a popular choir and recorded orchestral conductor whose strengths lie precisely in the combination of vocal and instrumental music. Alois Glassner is appreciated for his wide repertoire knowledges and sense of style from the Renaissance to modern times, his experience in the management of solo vocal ensemble to large-scale cappella choir, from the unique instrumental ensemble "Vienna horns" to symphony orchestra - and least but not last, for his pedagogical skills and projects.