Four settings with improvising bass guitarist Rafal Mazur, 4 CDs, the first a solo studio recording of two extended improvisations; the 2nd a duo with clarinetist Guillermo Gregorio; the 3rd a live concert at Baza Club in Krakow with trumpeter Artur Majewski; the 4th a quintet session with Gregorio, Satoko Fujii (piano), Natsuki Tamura (trumpet), Ramon Lopez (drums).

Picking up where the 2013 Clean Feed album Tone Hunting left off, the quartet of Anna Kaluza on alto saxophone, Artur Majewski on cornet, Rafal Mazur on acoustic bass guitar, with drummer/percussionist Vasco Trilla replacing Kuba Suchar, the refreshed quartet is heard live at the University of Zielona Gora, Poland for an informed 6-part free improvisation.

Investigating the continuity of our perceptions through sound--the one sense that flows continuously into our awareness--through a concert at Baza Club in Krakow, Poland in 2018 between alto saxophonist Keir Neuringer and acoustic bass guitarist Rafał Mazur, using magnificent technique as they tentatively then boldy exchanges waves of the past, present and future.

Not Two Records celebrates their 20th Anniversary with a festival in Wlen, Poland, inviting 13 of the finest European & US improvisers--Guy, Leandre, Mazur, Nilssen-Love, Kaucic, Fernandez, Gustafsson, Vandermark, Trzaska, Brotzmann, Swell, Holmlander, & Homburg--performing in configurations from duo to quintet, released in a limited 5-CD wooden box set.

Hailed as the most pyrotechnic and adventurous concert of the 12th Ad Libitum Festival in Warsaw, Poland, the collective quintet of Agusti Fernandez on piano, Artur Majewski on trumpet, Albert Cirera on saxophones, Rafal Mazur on bass, and Ramon Prats on drums, rage and flow through three movements of "Flux", starting at the "Source" and ending in an "Estuary"; awesome.

The UK/Europe trio of Albert Cirera on saxophones, Rafal Mazur on bass guitar, and Nicolas Field on drums, in five ordinal improvisations recorded at Alchemia Club in 2018, for a concert of vigorously assertive playing and seething interactive layers, laying back at times to build their progressions, ending the concert with an explorative "Fifth" improvisation.

Bringing separate collaborations together as a trio, Swedish saxophonist Martin Kuchen (Angles), who has worked separately with Catalan drummer Vascto Trilli and Polish guitarist Rafal Mazur, come together as Nobject, recording at Lodz-Art Inkubator during the sixth Musica Privata festival in Lodz, Poland, for 2 sets of fully free, sinuous and assertive improvisation.

A unique freely improvised sax and bass duo from Angles leader Martin Kuchen on alto and sopranino saxophones, and Rafal Mazur on acoustic bass guitar, recording live at BAZA Club in Krakow, Poland in 2017 they perform the two part "Baza", initiating with mastery and determination, morphing to more meditative playing, and ending with impressive assertion.

The well-traveled working group of Francois Carrier (alto saxophone, Chinese oboe), Michel Lambert (drums) and Rafal Mazur (acoustic bass guitar) performing live at Alchemia Club in Krakow, Poland in 2015 for an excellent example of collective free improvisation with distinctive and unconventional approaches to their dialog.

Live recordings from Alchemia Jazz Klub in Krakow, Poland in 2015 of the freely improvising trio of Francois Carrier on sax and Chinese oboe, Michel Lambert on drums, and Rafal Mazur on acoustic bass guitar, uniquely intertwining interchanges of joyful dialog.

A beautifully evolving set of duos, or "paths" from Philadelphia saxophonist Keir Neuringer and Polish bassis Rafal Mazur, using monumental technique to support a dialog that's technical and intensely focused while remaining lyrically sophisticated and imaginative.

Splatter's 3rd CD resulted from a meeting between the London-based quartet Splatter (Noel Taylor-clarinet; Anna Kaluza-sax; Tom Greenhalgh-drums; Pedro Velasco-electric guitar) and Polish bassist Rafal Mazur after their successful collaboration at Cafe Oto in 2010.

With links to Foton Quartet, Rob Mazurek, Nicole Mitchell, Keith Rowe, Kevin Drumm, Matt Bauder, &c, the Polish & German quartet of Anna Kaluza (sax), Artur Majewski (trumpet), Rafal Mazur (guitar) & Kuba Suchar (drums) perform a perfect blend of bebop, free forms, west coast jazz and free improvisation.