Rihards Zarins’ studies in music began in 1998 and continued to 2009. at the Riga Cathedral Choir School, where he studied piano, singing, conducting and other music-related specialties. In 2009-2013, Rihards continued his studies at the Jāzeps Mediņa Music High School in Riga, where he majored in conducting under Jānis Baltiņš.
In 2013-2014, Rihards studied choir conducting at the Jāzeps Vītols Academy of Music in Latvia, where he was supervised by Māris Sirmais.
Rihards has work experience with several different choirs: in 2013-2014 he worked as choirmaster of the youth choir in Balsis (Latvia, conductor Ints Teterovskis), in 2012-2013 as the second conductor of the mixed choir in Spārnos (Latvia, Jūrmala), in 2013-2014 he conducted the mixed choir of the Nordic Language Gymnasium in Riga. Since 2015, Rihards has been working as the choirmaster of the Latvian-Finnish mixed choir Ziemeļmeita (conductor Ilmārs Millers) in Helsinki, Finland.
Since 2013 Rihards has been an assistant to Ilmārs Millers and Jānis Baltiņš to the organizing committee of choir festivals and song festivals in Riga Mežaparks, Latvia. He has helped at various song festivals, the Nordic and Baltic Folk Song Festival and the World Choir Olympics.