"Willisau" is a captivating live album by the renowned free jazz saxophonist Urs Leimgruber, recorded at the Jazz Festival Willisau in Switzerland in 2017. This avant-garde masterpiece is a testament to Leimgruber's virtuosic skills and his ability to push the boundaries of jazz. The album features two extended tracks, "Monkeybusiness, Pt. 1" and "Monkeybusiness, Pt. 2," which showcase the dynamic interplay between Leimgruber on soprano and tenor saxes, Jacques Demierre on piano, Barre Phillips on double bass, and Thomas Lehn on analogue synthesizer. The raw energy and spontaneity of the live performance are palpable, making "Willisau" a thrilling listen for fans of free jazz and avant-garde music. With a duration of 52 minutes, this album is a journey through the unpredictable and exhilarating world of improvisational jazz, highlighting the unique talents of each musician involved. Released on April 19, 2019, under the Jazzwerkstatt label, "Willisau" is a must-experience for those seeking to explore the cutting edge of contemporary jazz.