Bass, Jiří Klecker, studied under the pedagogical leadership of Professor Vlastimil Babák and since 1975 has pursued a solo singing career. He participated in the master classes at the Bach Academy in Prague, in Stuttgart with Professor Helmuth Rilling and the seminar ‘Song and Oratorio’ in Wörgl, Austria with Professor K. Rapf from Vienna.
Klecker is currently a soloist member of the Opera of the National Theatre Brno and a permanent guest artist with the opera ensembles in Prague and Ostrava, as well as with the Regional Opera Theatre in Dresden. He has performed over 40 bass and bass-baritone roles. Some of those roles include: Méphistophélès in Gounod’s opera Faust and Marguerite, Sarastro in the Brno production of Mozart’s The Magic Flute and the Prague project of the same opera produced by the Open Air Opera. He achieved great acclaim for his portrayal of the double role of Janek and Jesus in the Ostrava production of Veronika composed by Rafael Kubelík.
Apart from the opera he has often performed in various concerts, namely his telecast ‘live’ performance of Charpentier's Te Deum with the Janáček Chamber Orchestra in Ostrava and the first Brno staging of Te Deum by J.B. Lully together with the Brno Philharmonic Orchestra. He collaborated with the conductor and the baroque flautist Andreas Kröpe for the CD recordings of J.S. Bach's and Mozart's works, as well as in the original interpretation with historical instruments of Salieri's Requiem performed for the English association Pickwick Intern. The French conductor, M. Moureau, invited him to take part in the staging of Puccini’s Messa di Gloria and Dvořák's Stabat Mater in Bordeaux and the subsequent recording of works with the English tenor R. Reaville. Klecker has also had several concert engagements with the Brno Philharmonic Orchestra, namely in Mozart's opera The Clemency of Titus led by the Austrian conductor C. Richter. He also works with the Brno ensemble managing the chamber opera ORFEO. He also participated in the production of 11 CD recordings.