Pēteris was born in Latvia. He graduated from Jazeps Vitols Latvian Music Academy in 1998. 2001 – 2003 improved his professional skills in Highschool of Music and Fine Arts in Vienna. Attended master classes around Europe held by B. Greenhouse, F. Helmerson, and others.
Together with his friends he formed a string quartet Euphonia in 2004. Recently P. Čirkšis is mainly involved in various chamber music ensembles’ activity.
Member of Kremerata Baltica since it’s foundation in 1997.