In competition CELLO 2025 competed 37 competitors from 5 countries (Slovenia, Poland, Russia, Turkey, Germany).

In competition CELLO 2024 competed 22 competitors from 5 countries (Poland, Slovenia, Turkey, Russia, South Korea).

In competition CELLO 2023 competed 25 competitors from 4 countries (Poland, Slovenia, Turkey, Latvia).

In competition CELLO 2022 competed 31 competitors from 5 countries (Czech Republic, Spain, Poland, Slovenia, China).