hiatus of 20 years. In December 2020 he started prepublishing this book in six languages as a daily soap on his Instagram. It was published in a Dutch as well as an English edition in Spring 2021. In Feb '22 he pre-published 90 pages of his next graphic novel 'Dissident in '20-'21' in which he explains Mattias Desmets mass formation theory. Musical Theoretical Diagrams The Moodswinger led to a research on harmonics theory. He published a clarifying 3rd bridge diagram related to this instrument in 2012 (and a more elaborate version of this diagram in 2017). In 2018 he published another microtonal diagram that compares the otonal and utonal scales with the harmonic series and 12TET and also how Partch' tonality diamond is related to the harmonic series when put in a triangular array. Education Landman co-wrote Nice Noise (about prepared guitar techniques and guitar modification) with Bart Hopkin. This book was released in 2012 by Experimental Musical Instruments and came along with 60 sound fragments made with a wide range of guitar preparations. Around 2014 Landman started spreading out instrument collections among a growing group of non-profit organisations focused on education, sound art, electro-acoustic music, media art and avant garde music. Inspired by pioneering sound labs like the BBC Radiophonic Workshop, Philips' NatLab and Studio for Electronic Music (WDR) these collaborations create an infrastructure of sound labs within Europe for experimental artists and builders. He is a regular guest teacher and lecturer at several academies and universities in Europe. In 2020 Bloomsbury Publishing published the book ‘’Sound Art’’ by Holger Schulze and Sanne van Krogt. Landman wrote the chapter Pickups and Strings in this academic publication. Instruments In the period 2000-2005 Landman created 9 prototype instruments. The black 4-string movable 3rd bridge zither. The red capozither, shown on the cover of Vivre dans l'aisance. Robocop, a 6 string heavily adjusted guitar with 2 additional bridges and 3 outputs. The 12 string overtone zither, the first prototype of Aaron Hemphill's Moodswinger. The blonde 3 string stereo-guitar, 1 bass string tuned B, and 2 thin B tuned guitar strings. The green 7 string trio-guitar, 1 bass string, DAD tuned guitar string and 3 G-strings. The Electric Spring The electric cymbalum, 72 strings, 12 pickups, one for each tone. The blue 4 string supertremolo-guitar, with no fretboard, but an adjustable pitch control for the left hand. Instruments for artists (2006-2009) Moodswinger, built