Two days of concerts in 2018 at Alchemia Club, in Krakow, Poland and a recording at Radio Krakow the next day from English composer, band leader and a bass player Barry Guy, in varying configurations at Alchemia of duos & trios with some of Europe & The UK's leading improvisers, culminating in an 11-piece ensemble at Radio Krakow performing the large work "For To End Yet Again".

Barcelona pianist Agustí Fernández and Polish bass guitarist Rafał Mazur correspond through solo tracks recorded in their respective studios, each missive an unusual and impressive free improvisation using extended techniques, inside playing and inexplicable exclamation, in a five-part exchange where each message is alternately addressed "Dear Agusti" and "Dear Rafał".

The first Wandering The Sound album in 2018 was the trio of Argentinian reedist Guillermo Gregorio, Spanish drummer Ramón López and Polish bassist Rafał Mazur, here extended to a quintet with pianist Satoko Fujii and trumpeter Natsuki Tamura for a 2019 concert at Alchemia in Poland, a masterful example of free improv based on a poem by Ikkyu Sojun, a Zen master from the 15th century.

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.

Recorded at the 2014 Ad Libitum Festival in Warsaw, pianist and composer Agusti Fernandez was invited to perform four concerts in celebration of his 60th birthday, choosing his working trio Aurora for once concert, a solo performance of "El Laberint de la Memoria", his electroacoustic Thunder trio, and a large ensemble conduction: "River, Tiger Fire".

Slovenian percussionist Zlatko Kaucic reinforces the title of his "Diversity" box set over 5 CDs in a variety of solo, duo, trio and quartet setting, including some of the UK & Europe's finest improvisers--Evan Parker, Agusti Fernandez, Lotte Anker, Artur Majewski, Rafal Mazur, Phil Minton, and Johannes Bauer--an excellent example of his wide-ranging work as an improviser.

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.