Janusz Widzyk was born on 18 June 1973 in Żywiec, Poland.
He began his double bass education as a student of Prof. Bonawentura Nancki at the Stanisław Moniuszko Secondary Music School in Bielsko Biała. He then studied with Prof. Czesław Ząbek at the Academy of Music in Cracow, and with Prof. Veit-Peter Schüßler at Hochschule für Musik und Tanz Köln. He is also a graduate of the European Mozart Academy.
As a student, he joined Beethovenhalle Orchester Bonn, where he was later appointed principal double bassist.
In 1998, he won the first prize at the renowned CIEM double bass competition in Geneva.
A year later, he was appointed principal double bassist with the NDR Radio Orchestra in Hamburg.
In 2001, he joined Berliner Philharmoniker, where he co-founded Philharmonische Camerata and Philharmonische Streichquintett Berlin, two important chamber ensembles formed by members of Berliner Philharmoniker. He plays as double bassist and soloist with both ensembles, performing in numerous prestigious venues and concert halls around the world.
Janusz Widzyk is also an active pedagogue. He worked as double bass professor at Hochschule für Musik und Tanz Köln and assistant professor at Karajan Akademie, a Berliner Philharmoniker affiliate.
Since 2015, he has taught double bass at Hochschule für Musik Hanns Eisler in Berlin. Additionally, he occasionally holds music courses and lectures with youth orchestras, while also serving as a juror during auditions for youth orchestras.