Celebrating 50 years of Andrea Centazzo's career and 45 years of ICTUS Records, this 4-CD set documents concerts over four nights at Milan's Teatro Out Off, vibrant sets of improvisation uniting global luminaries like Elliott Sharp, Ellen Burr, and Steve Swell in a boundary-pushing exploration of ICTUS's legacy and Centazzo's innovative artistry.

Finnish saxophonist and improviser Harri Sjöström assembles this quartet with some of the most innovative and in-demand players in Europe, the UK & Australia--Tony Buck from The Necks on drums & percussion, John Edwards on double bass, and Elisabeth Harnik on piano--captured live at Panda Platforma in Berlin in 2023 for a stellar concert of collective improvisation.

Two reeds, a cello and a signal processing instrument in this live electroacoustic improvisation session captured at Petersburg Art Space, in Berlin, Germany between cellist Guilherme Rodrigues, saxophonist Harri Sjostrom on soprano & sopranino using selected mutes, clarinetist Floris Floridis and electronic improvising legend Lawrence Casserley.

A concert recording on the occasion of the 10th anniversary of Einstein Kultur in Munich from the quartet of Erhard Hirt on guitar & computer and Paul Lytton on drums, percussion & objects (half of the Quartet XPACT) plus Harri Sjostrom on soprano & sopranino saxophones and Philipp Wachsmann on violin & electronics, presenting a remarkable set of collective ea-improvisations.

Beginning with an 8-member vocal incantation led by Taylor himself, this incredible reunion concert between pianist Cecil Taylor and drummer Sunny Murray was recorded by the FMP label in 1996 at the Total Music Meeting in Podewil, Berlin, an incredible display of pyrotechnical playing with an exultant excitement through three "sector" improvisations; extraordinary!

A live recording of insightful collective improvisation recorded in 2019 at the Moers Festival in Germany, from Harri Sjostrom on soprano saxophone, Achim Kaufmann on piano, Adam Pultz Melbye on double bass, Dag Magnus Narvesen on drums, and Emilio Gordoa on vibraphone, in an extended exploration of subtle hues through effortlessly intense and inventive interaction.

Bringing together a wealth of experience in contemporary improvised music, Berlin-based cellist Guilherme Rodrigues and soprano and sopranino saxophonist Harri Sjostrom developed these 12 pieces, combining and contrasting their instruments, at times seeming to complete each other's phrases, in a remarkably sophisticated and virtuosic "Treasure".