The competition is open for young musicians of all nationalities and is divided into age categories for the disciplines horn, accordion, double bass, zither and chamber groups with harp. The age category is determined by calendar year (from January 1st until December 31st). Example: Duration of the competition is from 15th until 17th of April 2026, competitor is born on June 5th 2015 – Competitor is 11 years old.

Age categories for solo disciplines horn, accordion, double bass and zither:
Pre-category – 9 years and younger
I. category – 11 years and younger
II. category – 13 years and younger
III. category – 15 years and younger
IV. category – 17 years and younger
V. category – 19 years and younger

General terms: https://www.glasbena-sola-celje.si/7-mednarodno-tekmovanje-celeia-2026/general-terms-and-rules/
Competition program: https://www.glasbena-sola-celje.si/7-mednarodno-tekmovanje-celeia-2026/competition-program/