The Carus Choir Coach offers choir singers the unique opportunity to study and learn their own, individual choral parts within the context of the sound of of the entire choir and orchestra. For every vocal range a separate CD containing each choir part is available. The CD is based on recorded interpretations by renowned artists who have performed the work from carefully prepared Carus Urtext editions. Each choir part is presented in three different versions:
- Original recording
- Coach: each part is accompanied by the piano, with the original recording sounding in the background
- Coach in slow mode: the tempo of the coach slows down to 70% of the original version – through this reduction passages can be learned more effectively.
Mozart’s Missa in C K. 317, erroneously dubbed the “Coronation Mass,” is among the most popular and most often performed works in this genre. The autograph of the Mass, which in many respects is very enlightening, was regarded as having been lost following the end of World War II, but was discovered at the end of the 1970s, it is preserved among the musical treasures contained in the Biblioteka Jagiellonska in Kraków. Ulrich Leisinger, the editor, prepared the edition based upon what is, without a doubt, the only authentic source, although additionally in the Critical Report he has also consulted an early copy of the Mass (by Fügerl), since such later copies often help to clarify questions concerning historical performance practice.