Violinist and composer Matija Krečič was born in Ljubljana in 1988. In 2015, he finished his bachelor degree at Carinthian State Conservatory in Klagenfurt where he studied violin under professor Helfried Fister and composition under professor Alfred Stingl. During his studies, he attended a number of music workshops (Primož Novšak, Helfried Fister, Igor Ozim). 

In 2005, before turning seventeen, he recorded, together with pianist Gašper Banovec, a garland of Slovenian folk songs, that was written entirely by them. Between 2008 and 2011, he actively cooperated with Terrafolk — he was a member of the Terrafolk production and Symbolic Orchestra. He also composed and wrote arrangements for the ensembles.

He actively collaborated with Magnifico, Teo Collori in Momento Cigano, Gal and Severa Gjurin, Katarina Juvančič and Dejan Lapanja, Symbolic Orchestra, Orkestrada and Mar Django ensembles. He wrote the music for some short films. In 2013, he participated in two shows produced by the Slovenian national television. The same year, he also wrote symphonic arrangements for Gal Gjurin, Siddharta and Magnifico, including music for the Serbian film Montevideo, vidimo se!, directed by Dragan Bjelogrlić. He composed and produced music for theater and puppet theatre plays. In 2016 he composed and produced complete musical ID for 1. channel of Slovenian national television. In 2018 he was awarded for the best arrangement at “Slovenska popevka” festival.

As a composer, he has cooperated with several Slovenian ensembles, including Ingenium Ensemble, Ljubljanski madrigalisti, APZ Alojzij Mav, Celjski komorni zbor, PAZ Vinko Vodopivec, Ljubljanski solisti, Elisabeth Wöhrer and Davorin Mori.

In 2013, Krečič co-founded a small publishing group called Janus Atelier that now publishes his works. In 2014, Ensemble Janus Atelier was formed. Krečič was the artistic director of the Janus Festival that took place in Maribor in May 2016.