Ondra Kozák is one of the main figures of the Czech and European bluegrass music scene. He is a singer and multi-instrumentalist (guitar, violin, mandolin, bass, dobro), composer, studio engineer and a sought-after collaborator and teacher. He has been actively involved in music since 2000 and professionally since 2016. 
He has recorded two solo albums (Ataman, 2014; Overtones, 2019) and contributed to more than 30 other studio albums. Ondra won the title "Guitarist of the Year" 5 times in the Czech Bluegrass Music Association poll. With various bands, he has won the prestigious competition for European Band of the Year at the French La Roche Bluegrass Festival 4 times and has collaborated with prominent figures of the world music scene, e.g. Mike Marshall, Bill Evans, Casey Driessen, John Reischman, Dale Ann Bradley, Steve Gulley, Cia Cherryholmes, Mike Compton, Radim Zenkl, etc. Ondra organizes several music camps in the Czech Republic and often appears as a guest lecturer at camps in Europe and the USA. He is the author of several publications, a podcast and other materials, which he publishes on his own teaching platform "ATAmusic".