The Concertivish Ostigi, often abbreviated as CCOS, is an educational institution specialized in the study, training, and research of music, located in the Arvernfeli city of Mirkas; in 1491, a branch of the school began operating in the western Strathold. In addition to their musical training, students are also obligated to learn fencing, dance, and history; they may also chose to take other extracurricular courses if they show great promise, such as math or illusionary magic. These extracurricular courses however are only taught outside CCOS itself: math is only taught in MIT due to the concertivish's agreement with the Ivory Coalition, and magic being taught in Firestone Academy for The Magically Gifted or by the Dean, due to both branches being in Andorian territories. Being the largest institute in the continent dedicated solely to music, the conservatorium's recitals are known to be exceptional multi-disciplinary performances, showcasing the best and the brightest musicians among all humanoid species. Tickets to these performances can be sold for hefty sums, that dramatically increase if the dean, Tara Kazaku, is planned to perform with a prodigious alumni.