On the evening of Friday, October 30, 2026, Oğuzhan Balcı’s symphonic poem “Echoing Hills” was performed in the CSO Ada Main Hall. 

Organized in memory of the heroic 190th Infantry Regiment—which lost 90 percent of its strength in a single night during the Battle of Sakarya, lasting 22 days and 22 nights—this concert featured the Hacettepe Symphony Orchestra accompanied by a mixed choir composed of three separate choirs. The Saygun Philharmonic Choir, which also premiered the work, performed at this event that brought together students from Gazi and Hacettepe Universities. Translated with DeepL.com (free version)