He attended Melbourne Grammar School before moving to Austria for middle school at the Musikgymnasium Wien [de] (Music Gymnasium Vienna), singing in the Hofburg Chapel Choir and the Clemencic Consort.
He studied baroque performance in Switzerland at the Schola Cantorum Basiliensis.
He lived in Switzerland, France, and Austria, working with Gerd Türk, Jörg-Andreas Bötticher and Andrea Marcon before returning to Australia.
[2] Career highlights included performances at the Vienna Concert House, Musikverein, and the Royal Albert Hall.
[4] Riebl sang and played trumpet on the song "Miserere" on The Cat Empire's second album Two Shoes.