Asmus Tietchens is quoted heavily in the new book „Future Sounds. Wie ein paar Krautrocker die Popwelt revolutionierten“ (Suhrkamp 2021) by journalist Christoph Dallach. The volume traces the history of Krautrock and associated musics of the 1970ies and beyond in the form of theme-structured interview excerpts from some of the contemporaries and key figures of the genre. Holger Czukay, Irmin & Hildegard Schmidt, Michael Rother, Daniel Miller, Brian Eno and many more are quoted on subjects like „Sex“, „Drogen“, „1968“, „Plank“, „Austausch“ and more. The book is in German and should be available now from all good bookstores.

Info from the publisher:
https://www.suhrkamp.de/buch/christoph-dallach-future-sounds-t-9783518465981