Wierbos also maintains a solo career. He has a running project under the name Wollo’s World, where he brings together different artistic combinations, ranging from duos with tap-dancer Marije Nie and bassist Wilbert de Joode to a quartet with Misha Mengelberg, Mats Gustafsson and Wilbert de Joode. In the future Wollos’ World hopes to feature such interesting musicians as Simon Nabatov, Hamid Drake and Jim Black.

Wolter Wierbos can be heard on more than 100 CD’s and LP’s. He has released two solo CDs: X Caliber (ICP 032, 1995), “a round-trip tour of his horn, from buzzing mute mutations, grizzly blurts and purring multiphonics to radiant melodies”, and Wierbos (DATA 824), a reissue of his 1982 solo LP with an additional track.

Quotes
“He compacts the horn’s history with no presumption and, overall, shows a magnetic sense of levity while demonstrating his own sheer brilliance.”

He is currently active with Misha Mengelberg’s ICP (Downbeat Poll winner 2002, Talent Deserving Wider Recognition), Gerry Hemingway Quintet, Franky Douglas’ Sunchild, Bik Bent Braam, Albrecht Maurer Trio Works, Nocando, Carl Ludwig Hübsch’s Longrun Development of the Universe, Frank Gratkowski Quartet, Available Jelly and Sean Bergin’s MOB