Bernhard Rainer attended school in his hometown and afterwards studied trombone in Graz (Hochschule für Musik) and Vienna (Universität für Musik). He continued his studies in London (Royal Academy of Music) and Basel (Schola Cantorum), took private lessons in historical singing and dedicated time to study cornets, recorders and traverse flutes. In 2018 he obtained his doctorate in musicology with a thesis on instrumentalists of the 16th century.
Bernhard Rainer gives lectures on historical performance practice at IES abroad in Vienna and teaches Historical Trombone as well as the theory of Early Music at Kunstuniversität Graz.
In his artistic career he plays with numerous ensembles and orchestras of the international “Originalklang”-scene (original sound) such as Wiener Akademie Clemencic Consort, Concerto Palatino, Amsterdam Baroque Orchestra, Collegium 1704, Akademie für Alte Musik Berlin, Concerto Köln and Freiburger Barockorchester.